> Except in a few cases, monopolies cause problems with deincentivization of innovation, uncompetitive behaviour, poorer outcomes for consumers and often higher prices than there would be otherwise were there a competitor.

I think you'll only find this is the case with government-granted monopoly.

Government-granted monopolies (US post office, some energy utilities, many transportation companies and so on) have little incentive to innovate and generally deliver poor service to consumers.

But how can you argue this about Apple? They're incredible innovators, they deliver great products that consumers love and the prices of those products generally fall over time.