Hytale's Co-Founder and Tech Director, revealed that Hytale will offer experimental x64 Linux support via flatpak at launch, with plans to enhance it based on community feedback

https://lemmy.ml/post/41111066

That’s cool. Maybe someday this year we’ll see further news about paid applications in Flathub
Does the Minecraft launcher flatpak (com.mojang.Minecraft) count as a paid app?
Don’t know. I guess. I’m just talking opening up Flathub and seeing anything I can buy. Haven’t noticed premium cost applications in Flathub yet
Who would do the payment processing in this case? Would every repo implement a means of accepting money? You’d have to implement it carefully to avoid a load of malicious repositories popping up selling free apps or reselling pirated apps

itsfoss.com/news/flathub-paid-apps/

End of 2024 an LLC formation to handle payments was announced in the works. Haven’t kept up much to see if anything has progressed with that

Flathub To Introduce Paid Apps and Easy Donation Options

Flathub is an increasingly popular portal for Flatpak apps for every Linux distribution. Now, it's doing something to help the ecosystem grow!

It's FOSS