the only think that holding back the gaming industry in implementing cryptocurrency I guess is the fact that maybe it took a learning curve for some game consumers, and also the fact that so many of newer gaming projects nowadays are kinda releasing some low quality games, of course there are great games like sandbox, etc but overall most of the games that has implemented cryptocurrency just looks like some cheap rip off games.
Imagine if the games were of AAA quality surely the industry would strive a lot but alas that also requires massive funding before it could be realized because as we know developing great games took so much resources.