What do you mean with out of the box, if you play steam games that is pretty much install and play, For Epic and GOG I use Heroic Game launcher with the same success.
For the launcher you should try rofi, there is nothing running as a daemon. It runs fresh everytime but it is still quick and looks nice if you want to make it look nice.
You are definitely not paying the creators even if you pay the official service, look at the protests literally going on right now. The middle man is actually stealing and we are just consuming what we like how we like it. If there were a perfect streaming service, everything on it, in all the languages I need and the resolution/audio I want then i will not be pirating. Going the "good way" is WAAAAY more inconvenient for me.
Security by overcomplication