This hard for me to understand. Apple hasn’t changed its approach their wall garden in ages. The consumer market decided to reward that model with adoption of Apple products.
Worth a read: https://en.wikipedia.org/wiki/Sherman_Antitrust_Act
The same action might be legit with 10% marketshare but lesive of market competition when at 60% marketshare.
Take golden-era Microsoft: bundling a default browser was anti-competitive for them, whereas it clearly wasn't for any Linux distribution out there.