I don't have the patience to have to play against others or to have to train up myself before I can play the Peer vs Peer brand of the game.
And I think that generally, when people want to gamble, they are simply seeking a quick entertainment and not anything extended. They don't want to have to install an app, enter a training tutorial, and wait for people to come online.
Its actually a matter of preference because some do like to play strategic type of games and some doesnt really matter at all as long the results are instant or can be known without needing to wait up longer.
Knowing that gamblers are really way too impatient when it comes to gambling where some doesnt really like on waiting up for that long and want fast results.