https://blog.us.playstation.com/2018/09/20/playstation-now-adds-downloading-of-ps4-ps2-games/
About damn time PlayStation did this. When you have Microsoft of all entities set up & start Game Pass to the point that small gaming businesses in Europe are mad at them for doing this (and I remember there are a few that stopped selling Xbox One games and consoles for this) and now Sony did that... Never too late. But, they should have done it on the onset. Good for doing this, because not everyone in the US has good and capable high speed broadband or fiber internet service at the moment... So with this.... I would say go and buy physical games for some time in the near future.