I don't think they've ever cared about open platforms, they just care about profit. The Google and Apple cases were intended to allow them to bypass the app store fee for microtransactions. That's it.

So them not supporting Linux has nothing to do with Linux itself, but the possibility for profit. If you read between the lines, Sweeney is basically saying, "our people are making more money on other projects than they would working on Linux support." If Linux had lots of users that wouldn't play on their other platforms, they could possibly make more by supporting Linux than other efforts (e.g. more cosmetics).

Sweeney is a simple guy, if it makes him more money than what he's currently doing, he loves it. If it doesn't, he'll avoid it. There's no deep seeded hatred of Linux here (EAC and Unreal Engine both support Linux, and the old Unreal Tournament games were Linux native), he just likes money more than anything else.

Sweeney is uncomplicated, and I like that. There's no veiled promises or expectations, so it's really easy to understand exactly why he does the things he does. I don't buy his games or use his platform because I expect him to do the bare minimum to make money, so I instead spend my time and money elsewhere. Valve earns my business, Epic does not. I don't hate Sweeney or Epic, I just find them uninteresting.