[zodiac]

> Every time you install an open-source app, the developers are extorted by Apple with Core Technology Fee of €0.5 each

I don't think this is true? AIUI a developer can choose to operating using the "old business terms" even in the EU, in which case they don't have to pay the fee. https://developer.apple.com/support/core-technology-fee/ backs this up by stating that the CTF is an element of the "new business terms".