@BaldiMac,
I think I may have fully understood the CTF now. It looks that Apple does not charge for App updates under a 12 Month period from the first install of the year. So basically one pays €0.5 per App install each 12 months regardless of the number of updates. If that is the case, the deal looks ok for most cases ... provided the developer actually has a business.
"The fee aims to meet the needs of both users and developers. Since a first annual install is only counted once per account, developers can deliver unlimited feature updates, bug fixes, and security patches to users for 12 months with no additional fee, regardless of how many devices the user has. And when users upgrade or replace their devices, developers aren’t charged when users reinstall their apps through an
iCloud transfer."
Looks ok to me. Is not bad at all.
The challenge I guess are for freemium models.