I agree, except the DMA specifically only applies to companies over a specific size. I think if the German newspapers were at FB/Apple scale, in terms of number of users, then the DMA would apply (i.e. they would be designated gatekeepers or similar) and they could also be fined. Although I think pay for no ads is also a violation of GDPR maybe?
Surely there is a middle ground where its at least possible to install apps that apple haven't approved[1]? I also like the idea of the _higher_ bar that the app store is supposed to have (not that this bar is always met), but the lack of any alternative is really crappy.