Counter argument. iTunes. You can buy non OEM parts to maintain and repair your Ford vehicle and you do not have to take your vehicle to a licensed Ford dealership for maintenance. At the same time, purchasing a Ford vehicle does not create a system that incentivises you to purchase additional Ford vehicles down the road no does it in any way cause any barriers if you also own a Hyundai simultaneously. Where as, if you buy an Apple product and get locked in the Apple ecosystem, there are built in incentives that encourage you to continue buying Apple products instead of changing platforms.The reason the Apple ecosystem works so well, is because it is a highly curated and controlled environment.
By that way of thinking, the fact that Ford only sells Ford parts for their Ford cars, is also a monopoly.