Gave up? There are more Linux games than ever. Most commercial games work fine on Linux now. Some through emulation of some sort, others completely natively, because most gamer engines support Linux natively, making it trivial to do so. And as a gamer, I can't really tell the difference between the two.

If you mean Linux-only classic open source games, like Angband or Battle for Wesnoth or something, they still exist, but the demand has clearly gone down because now almost all games work on Linux. Except the ones with anti-cheat systems that rootkit-style access to your system.