Apple would go bankrupt without US protectionist policy propping up their service revenue.

That's pretty bad. Maybe not "reliant on ad monopoly" bad, but pretty close.

That seems like a stretch. Even in Europe where people can choose to use different app stores, few people actually do. So few, in fact, that one of the alternative app stores recently shut down.

Have you considered that people just like Apple's products and services?

In their revenue report this week out of $140B, services made up 30B. 140B-30B = 110B. Thats pretty far from bankruptcy.

Elaborate? Financial results say otherwise.