All companies are in it for the money. There stores need to, eventually, make a profit to survive otherwise what's the point in having a store?
I have no problem with Epic. I don't use all of the features on Steam (hell I'm still waiting for accessibility features such as a big font selection on there and that's not been addressed other then editing a config file which gets over written when you upgrade it!) but some, such as Workshop, are nice but then there's always mod managers, etc. if I need it badly. Epic's free games have been amazing. Some great games given away and some I wouldn't have played unless they'd have been given away and it's a great way to encourage people to the store - I can't remember the last time I bought a game on Steam. I have no loyalty to Steam, or any store front, at the end of the day it's just a shop. Why people feel so beholden to it is crazy. I get they made some great games in the day - but they've never finished HL2 (even though it was going to be episodic gaming because it was quicker) and EP2 was about 10-15 years ago and yes the early Steam store used to be a massive pile of crap. It's better now but still missing basic features.
I like GoG personally, the ability to download and store the files and install them on as many PC's as I like is great. I also like them getting old games working without much input and then fixing them up if something is wrong later but it wouldn't stop me buying a game where I was going to get the best deal.
M.