Yeah, very good points. A while ago there was talk about some kind of foundation where maintainers could bill their hours and people and big tech companies could donate. Not sure if / how that would work ...
During the xz incident I also talked about this on Mastodon and someone suggested that big tech could just employ maintainers without them having to do anything for the company directly, just work on the project / library the company uses. Again not everybody would want to do that ...
I'm afraid there's no easy one-fits-all solution here.
I think the route of giving it all away for free and either offering hosting if the project needs it or (business) support is the most successful way of doing this.
I have no problems whatsoever with donation buttons / banners (like Krita does) but I'm afraid random donations is not really a sustainable model for most projects. I try to remember to donate to projects I use a lot (especially if it's for work) but it is another thing on my todo list and not one with high priority, so I don't do it as often as I'd like ... 😓
For me personally I think a big chunk of why FOSS alternatives seem "bad" is because you don't know how to use them (yet). I spend decades of familiarising myself with all the horrendous fucking "quirks" and bad UX and other stuff of Adobe software and internalsing all that bullshit. When Inkscape had different "quirks" (= ways of doing things) of course it's easy to dismiss it as "bad".
And yes, some software that is mostly made by a bunch of volunteers for free can't feature-compete with a multi-million company, surprise.
I think it would be more interesting to find out why Adobe software is still so abysmal after they've probably thrown hundreds of millions of dollars on it. I recently watched my brother work on a complex project with Premiere and it was almost non-functional, quite fascinating, actually.
Do you know what format the comics come from Amazon (and if they actually have DRM)? I'm not sure if I've ever done it with comics but ebooks from Amazon usually worked well with DeDRM for Calibre:
"Übel Eats" 👌
(Übel meaning awful or bad in German (tad old-fashioned or slang depending on usage?) True for the underpaid and overworked workers especially)