I have never needed to repair an Apple device, because they work well for the duration of their lifetime in my experience. When I have occasionally needed repairs, Apple does a fine job of servicing my product for a reasonable price. I can install every piece of software that I want on my Mac, and every business/startup I've worked at has used Macs as the default hardware so I'm not so sure about your "they prevent you from running your business unfettered" claim either.

tl;dr - the stuff you're worried about is probably moot to the average consumer, which is why Apple continues to make sales.