Then Apple will need to comply with the rules, just as they have done before with the alternative browser list (pretty confusing for an average user, IMO), the alternative app stores (not much use either) and the delayed rolling out of Apple Intelligence.
Every problem has a solution; it is just that at the moment both Apple and the EC are in the posturing phase, flexing their political and economic muscles. They will sort it out, eventually, as currently the EU customers (whose interests both Apple and the EC claim to protect) are losing out on the new features.