I don't think the vast majority of people have office jobs
They don't have to. People use PCs outside of the office too.
Those people that use a computer at work are using windows, or in rare cases, macs.
That's not the discussion we were having.
which is why most people don't have PCs anymore when phones will do.
Phones cannot do the same job as PCs. It has nothing to do with compute power, it has to do with peripherals and multitasking and general work efficiency.
The point is, as I said, that the vast majority of work is done in the cloud, through a browser, which is something that Linux does absolutely fine.
Most businesses have Windows apps that are used all day every day
You're mistaken.