* They support many platforms (windows, Linux,macOS, android, iOS). * There are server side components (bookmark sync for instance) * They need infrastructure

* They support many platforms (windows, Linux,macOS, android, iOS). * There are server side components (bookmark sync for instance) * They need infrastructure to run the tests, do the builds, handle the bug reports, etc... I don't know where you got your 20% overhead, but from what I heard it's wayyyy off.