Legally speaking you lose the license to all the games because you don’t own the games only a license to use those games.

And the game owners have only licensed the games to the gaming platform (steam, etc) with the license to re-license those to you. Ceasing to exist the middleman, also your end of the license is invalidated.

You would need to negotiate a license to use each game again with somebody else or you are effectively pirating the game.

This doesn’t matter if there are DRM or no DRM. This not a technical aspect. Pirating means using without being legally allowed to, circumventing DRM or not is just the difference between breaking into your home or finding a non locked door to enter without damaging the house. Its still stealing.

Don’t get mad, I do not condone DRM and I don’t think piracy is stealing, it was just an example from a legal point of view

IANAL, but had to study the field for work related stuff.