In addition to the other great points in this thread, Apple has a cost barrier that other operating systems don't.
In an economic climate where everything is getting more expensive, a consumer isn't going to fork out $800+ on a MacBook or an iPhone without first actively wanting to be part of the ecosystem, especially if the hardware they have gets the job done.
The reason Apple isn't growing as fast as it's competitors right now is exactly that. Apple is expensive to get into. No amount of enshitification on other OS's is going to change that.