Apple's a good example because they're such an incredibly global brand, who should be less reliant on EU customers. Yet Europe is responsible for >20% of their revenue. Shareholders would eat you alive for just "nope"ing away from that.
Yes, US GDP/capita is far above the EU average, but the EU still represents 450 million, on average fairly wealthy people. So companies simply play ball. And that excludes the UK, whose data protection laws are similarly strict.