Epic has already been caught scanning and collecting data from files on people’s hard drives that are totally unrelated to Epic or its games.
Epic’s habit of interfering with game availability, through exclusivity deals.
Ties with Tencent (super anti-consumer chinese state-owned megacorp)
To be more clear about it, Tencent is Epic’s largest investor, so they obviously have a great deal of influence over and access to anything they want from Epic (likely including user data) and they directly benefit from Epic’s growth.
Steam pros:
Also:
Actively funding and supporting development of linux gaming technologies for more than a few years now, to the point where linux is now very much a viable gaming platform.
Steam cons:
Drm
Given that DRM on Steam is entirely up to each game publisher, I don’t think it’s appropriate to list under “Steam cons”. I’m not even sure that any of my Steam games have DRM.
If you mean that most Steam games expect to find an instance of Steam running, you should know that is not DRM, and it’s trivially replaced with the open-source Goldberg Emulator or a similar tool.
Gog
I don’t know anything besides the fact that it has drm-free games
Another plus for GOG is that they let you download games with a web browser. No special app required. (I think Itch.io does this as well.)