The problem with Apple is not that it is big, but that it uses its power in one market segment (phones) to control other market segments (phone apps). And not just to gain dominance, but to have total market control through App Store.

If anti-monopoly offices were able to force Microsoft to offer competing browsers after OS installation, then they should force Apple and Google to offer competing App Stores, each with its own app policies.

Thought experiment: People willingly giving this power over to an alternative group of people (a company in this case) could be considered a democratic vote from a populace? Providing power is willingly given to them by the actions of the group.

At best people are voting for who has the best product or service to solve their immediate needs. I don't buy Apple products (and I'm fully in the Apple ecosystem) because of Apple's great vision for how society should develop. Democracy operates on a different plane.

So a democratic system that ignores property rights when it suits the mob that is not actually Democratic.

property rights of companies or individuals?

democracy is about individual freedoms and rights, not necessarily those of profit-seeking entities

And are not individual workers "profit-seeking entities"

btw I do own Apple shares so what about my rights not to have those expropriated.

Corporations are just legal conctructs to easily define rights and powers of their owners. So property rights of companies are just property rights of their owners.