This just a non-real cash poker app. However, there are real cash poker apps such as pokerstars, 888poker, GGpoker, partypoker and etc.
As of July 2020, there were 7,791 poker tables world-widely.
further more, World gambling statistics show that around 26% of the population gamble. That means around 1.6 billion people worldwide gamble and 4.2 billion gamble at least once every year.
https://www.casino.org/features/gambling-statistics/
We have seen so many types of GameFi, but none of them is focused on the game which means it is not entertained. I think poker is a good start point to enter the gamefi area in the future.
When planning for a market or estimating the likely results of a business, it is very easy to fool oneself on the numbers by consulting reports that speak about the market in general terms. For example, once I meet a guy that said he was going to teach people to run. While I am sure there is some science to it, the basis of his business is that "everyone runs, so it is a huge market. If everyone is your client, nobody is your client.