If Apple stops servicing the EU… …life will go on. No EU country will be “doomed” let alone “totally doomed”. I prefer many Apple products over Android-based devices or, god forbid, any S(h)amsung crap, but the EU will continue to prosper without Apple Intelligence, iPhone Sharing or even iPhones and Macs at all. The EU is setting a precedent that every consumer would benefit from, especially if more countries would follow the lead. Yes, the EC’s approach could be better, they’re stumbling forwards (cookie-dialogs, plastic-bottle tethered-caps,o insane E2E encryption-invalidating proposals etc etc) but I still believe the overall direction will ultimately be beneficial to many.
The purpose of the DMA is to increase competition, not directly benefit the consumer. If there is no Apple product, you don't have that product to support your application and your business.