It's high stakes for UK firms as sports wagering starts to spread in America.
From Tuesday, brand-new guidelines on wagering entered result in Delaware, a tiny east coast state about 2 hours from Washington.
Neighbouring New Jersey might start accepting sports bets as early as Friday.
The modifications are the first in what could end up being a wave of legalisation after the Supreme Court last month cleared the way for states to enable sports wagering.
The industry sees a "as soon as in a generation" opportunity to establish a new market in sports-mad America, said Dublin-based financial analyst David Jennings, who heads leisure research at Davy.
For UK firms, which are grappling with combination, increased online competition and harder rules from UK regulators, the timing is particularly opportune.
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But the market says relying on the US remains a risky bet, as UK business deal with complicated state-by-state regulation and competition from entrenched local interests.
"It's something that we're actually concentrating on, however similarly we do not desire to overhype it," stated James Midmer, spokesman at Paddy Power Betfair, which just recently purchased the US dream sports site FanDuel.
'Require time'
The US accounted for about 23% of the world's $244bn (₤ 182bn) in video gaming revenue last year, according to a report by Technavio, external released in January.
Firms are hoping to take advantage of more of that activity after last month's decision, which overruled a 1992 federal law that barred states outside of Nevada and a few others from authorising sports betting.
The judgment found the law was an over-reach of federal power. But the court it did not in fact legalise sports wagering, leaving that concern to local lawmakers.
That is expected to cause considerable variation in how companies get accredited, where sports betting can occur, and which events are open to speculation - with huge ramifications for the size of the market.
Potential profits varieties from $4.2 bn to practically $20bn each year depending on elements like how numerous states relocate to legalise, Oxford Economics approximated in a 2017 research study for the American Gaming Association.
"There was a lot of 'this is going to be huge'", stated Will Hawkley, London-based head of leisure for specialists KPMG.
Now, he said: "I think many people ... are taking a look at this as, 'it's an opportunity but it's not going to be $20bn and it's going to be state by state and it's going to take some time'."
'Remains to be seen"
Chris Grove, handling director at Eilers & Krejcik Gaming, forecasts that 32 states will legalise sports betting in some type by 2023, producing a market with about $6bn in yearly revenue.
But bookmakers deal with a far different landscape in America than they perform in the UK, where betting stores are a regular sight.
US laws restricted gaming largely to Native American lands and Nevada's Las Vegas strip up until relatively just recently.
In the popular creativity, sports wagering has actually long been linked to a 1919 baseball World Series match-fixing scandal.
States have likewise been slow to legalise many types of online gambling, despite a 2011 Justice Department viewpoint that appeared to get rid of barriers.
While sports betting is typically viewed in its own classification, "it plainly remains to be seen whether it gets the sort of momentum individuals think it will," stated Keith Miller, law teacher at Drake University and co-author of a book about sports betting regulation.
David Carruthers is the previous president of BetonSports, who was arrested in the US in 2006 for running an offshore online sportsbook and served prison time.
Now an expert, he states UK companies ought to approach the market thoroughly, picking partners with caution and preventing errors that might result in regulator backlash.
"This is a chance for the American sports gambler ... I'm unsure whether it is an opportunity for service," he says. "It really is reliant on the outcome of [state] legislation and how the service operators pursue the opportunity."
'It will be collaborations'
As legalisation begins, sports betting firms are lobbying to ward off high tax rates, along with demands by US sports leagues, which desire to gather a percentage of profits as an "stability charge".
International business deal with the included challenge of an effective existing video gaming industry, with casino operators, state-run lottery games and Native American people that are looking for to safeguard their grass.
Analysts say UK companies will require to strike partnerships, offering their competence and technology in order to make inroads.
They point to SBTech's recent statement that it is supplying innovation for Kentucky Derby operator Churchill Downs as an example of the kind of offers likely to materialise.
"It will be a win-win for everybody, however it will be partnerships and it will be driven by innovation," Mr Hawkley said.
'It will simply depend'
Joe Asher, president at William Hill US, is clear-eyed about the realities.
The business has actually been investing in the US market considering that 2011, when it acquired three US companies to develop a presence in Nevada.
William Hill now utilizes about 450 people in the US and has actually revealed collaborations with gambling establishments in Iowa and New Jersey.
It works as risk manager for the Delaware Lottery and has invested millions alongside a local designer in a New Jersey horse racing track.
Mr Asher stated William Hill has actually become a household name in Nevada but that's not always the goal everywhere.
"We certainly plan to have a very significant brand existence in New Jersey," he said. "In other states, it will just depend upon regulation and potentially who our regional partner is."
"The US is going to be the most significant sports wagering market in the world," he included. "Obviously that's not going to happen on day one."