I'm aware of these not-downloadable-but-is-digital services/stores/platforms that do:
- app stores (Apple takes 30%, Google takes 30%)
- content (YouTube keeps 45%, Twitch takes a cut)
- e-commerce (Etsy 5% transaction fee; eBay takes a %)
- music/podcast (Spotify; SoundCloud)
- e-learning (Udemy; Teachable)
- gaming (Steam takes 30%; Epic takes %12)
- rental (AirBNB service fees; Turo commission on each car rental)
- freelancing (Upwork's sliding fee; Fiverr takes 20%)
But Unity is DOWNLOADABLE software, not a platform/app-store/SaaS. So, why revenue share? Surely most devs just make free-standing/downloadable games that don't tie into any platform-y features?
AFAIK, even Unity Enterprise [0] is just source code, support, 3-year LTS bug fixes, and the only real thing that's platform-y is the build server, which seems to cost extra anyway.