Many consider games to be works of art in the same way that music, books, movies, and paintings are. In the same way that historians use the creative works of yesteryear to guage how people during events like World War I, historians of tomorrow need access to games to study the events of our lifetimes.
Book burnings have occurred throughout history and they have been devastating, but many works can still be studied because other copies exist elsewhere. The problem with games is that they’re deliberately designed to self-destruct. Historians 50 years down the line can’t study Fortnite’s mechanics or its evolution because as soon as a new update releases, the servers for the previous chapter of the game are gone. Even if we wanted to preserve just the final release, we can’t because it is far easier for Epic Games to hide or throw away the server source code rather than properly archive it when they inevitably kill the game. This is a huge deal because Fortnite has genuinely had an impact on our culture, for better or worse. Even if it didn’t, it is a technical feat to get a game like that to work well, and programmers need to be able to study the game after the industry inevitably moves on.
To be clear, companies shouldn’t need to maintain their games and software forever. However, there is simply no way to play many games because there are no usable servers for them, which is entirely unacceptable. The initiative simply wants us to be in a world where someone can put in a reasonable amount of effort to play abandoned games, and I don’t think that’s a huge ask.
As for minor issues, EGS does not have feature parity with Steam or GOG. They don’t have user reviews, for example. This makes it a worse user experience.
More importantly, Epic has a habit of anti-competitive or anti-consumer behavior. When EGS first launched, they were keen on doing console-style timed exclusives, even for games that were already purchasable on platforms like Steam.
Lastly, Epic has a history of neglecting or shutting down games. A few of their older games were taken offline permanently when Fortnite started gaining traction. They then purchased a few studios, namely Psyonix (makers of Rocket League), Mediatonic (Fall Guys), and Harmonix (Rock Band/Guitar Hero series). These studios seem to be a shell of what they used to be. Psyonix’s first major project under Epic was Rocket Racing in Fortnite, and this project seemed to be prioritized over Rocket League and even caused the removal of core features of Rocket League. Harmonix worked on Fortnite Festival, but that came at the cost of Fuser, which shut down and was delisted about a year after launch. As for Mediatonic, I don’t think they worked on anything else yet, but a large portion of the studio was recently laid off. Needless to say, fans of the affected studios aren’t happy with Epic as they’re being treated as 2nd-class citizens compared to Fortnite players.