Investing in the future of poker

[Dire]

Imagine poker were legalized within the next couple of years and US companies were able to get in the action. How big of a financial boon would this be for the companies? I have no idea how to estimate this, especially as it relates to their current earn rates. Is it even worth considering investing in, for example, Harrah's if one feels they may be a big name in online gambling/poker in the years to come?