The platform power of Apple's walled garden will destroy startup culture. Any great idea can vertically integrated directly into the platform, OR taxed 30% until the only real winner is Apple, OR nullified by kicking it off the app store without comment.
Not even Google is safe. Search is something Apple could do "good enough" at this point...and all they really have to do is threaten Google with being booted as the preferred search engine and Sundar Pichai will bid more and more and more until he is paying Apple $25 bln a year for the privilege.
Android will be relegated to Samsung making phones for poor people. Windows will die because other than gamers, no one under 30 uses it.
Who is safe? Amazon. Apple doesn't want to be in the warehouse business. Also Tesla. Apple will never catch them. Everyone else will lose and suffer the Apple monopoly.