*Well, some can. Manticore Games just launched a new program for their currently alpha Core game engine/platform, where developers get paid simply by the number of players that play their games. During this pilot program however, the number of seats available is limited.
Link:
https://www.gamefromscratch.com/post/2020/07/08/Core-Platform-Launch-Pilot-Monetization-Program.aspx
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