Games that use QUIC (no connections without CA TLS) will have a higher chance of eventually stopping working because they'll have to maintain the infrastructure

Games that use QUIC (no connections without CA TLS) will have a higher chance of eventually stopping working because they'll have to maintain the infrastructure to update their leased TLS cert from the CA every $x days. This is less important now than in the past because most games have moved to a microtransactions model that is (mostly, see exceptions like Team Fortress 2) incompatible with hosting your own server. So usually the company kills the game or goes under itself first. But for those games that do use QUIC and do have private servers, hacks will be needed to keep the games going long term (20+ years). Retro-gaming is going to be much harder in the future.