3. Valve has never pursued exclusivity unlike the Epic you idolize so much.
I don't like Epic either, I just don't think there's a major difference. You can't categorize me as team red or team blue like you all try to do, you have to actually argue the merits. The merits here being "it doesn't actually matter to the consumer why they're exclusive."
4. With rare exceptions, you don't own a video game. Even if you happen to own a physical disk copy of it, you don't own the software on it, you merely have permission to use it. That's because of copyright.
This is the same old tired DRM apologizing shit people have been saying for years. If you're Atari good luck getting into my house and taking my discs and cartridges away when you close up shop and lose your licensing. Come on my property to do it without my permission and I literally have the legal right to shoot you. But oh yeah, sure, it's the same thing as DRM and the ability to change or revoke my game license over the internet. Sure. Let me know how Google Stadia works out for you Mr. "I never owned my discs anyway!"