I get you are trying to win an easy sentimental argument, but making your own market definitions will not make them a monopoly.
Apple sells products, not "computing". In no market where they sell products they have a monopoly.
Computing covers many of the things people do in a modern society, including:
- Communication
- Banking
- Investing & trading
- Finding information
- Applying to jobs
In what world is that not a critical market?
Imagine there are only Chevrolet and Honda (Apple and Android).
Imagine you could only go to Chevrolet-approved locations. That Italian place you like is on the destination list, but only because they pay 30% of their revenue to Chevy.
The movie theater is protesting the 30% fee, so your car physically can't even visit. It's prohibited.
The new boutique really wants to get business. After all it bought land and paid for real estate in a prime location. But Chevy doesn't like the look of it and asks them to tear it down and rebuild.
All the artists at the market your Chevy brought you to are mad because they have to fork out to Chevy, and they're not even sure what Chevy has to do with any of this. They just want to sell their art.
The builders are complaining because everyone is driving these damn cars with their silly rules, and nobody used to work or think this way. But suddenly everyone thinks Chevy's demands are okay. They're not entitled.
Customers like Chevy.