Linux

EDIT: I gave you an upvote here because you don't deserve downvotes for your well stated opinion.

I have done computer work for a bunch of little old ladies, and when they couldn't afford to upgrade to new hardware, I would put a lightweight version of Linux on their computers for them.

Only one of them really struggled with the difference, and she wasn't against learning, she just struggled. The rest handled the transition fine and didn't do a lot of complaining that it wasn't what they were used to. (Probably partially because I made clear what apps were what and put shortcuts to each on their desktop, each shortcut well labeled.)

I don't think it's unusual for people to "get used to" how certain things work and expect that. In fact, I'd say that's pretty normal.

But I think there's far less fear of change from regular people than you seem to think. I see far less addiction to the "brand" of Windows than you might think.

To use the car analogy, it’s like somebody who will only drive Fords, and is terrified of the prospect of getting behind the wheel of a car made by any other manufacturer.

I mean, lots of people are scared as hell of driving a stick shift and refuse to learn.... soooo yeah. I'd say that's a closer approximation. Because a Ford and a Chevy both have steering wheels and pedals all in the same place. You add that extra pedal and some folks lose their minds. Which at least makes sense because it is different.