I’m sure not only does Apple have a host of lawyers working on understanding this specific regulation but they have gone through the process of developing rigorous estimates of the costs and benefits of compliance vs litigation. Given the size of Apple’s market and the potential for other countries to follow suit with their own regulations pending these cases, they have likely deemed compliance to be extremely costly to their business. In that case, their potential budget for fighting this may be enormous.
Oh yeah, it was an aside. I'm not worried about the world-leading US and Asian incumbents. Expensive regulations help incumbents. I'm more worried about the local EU companies that play in this market. Or I would be, something mysterious (sotto voce probably regulatory expenses) put them out of business.
That's the thing about the DMA. These provisions only apply if you hit a certain extreme market presence. These regulations do not apply to those small companies.
