The difference here is mountains vs. molehills.
And in most cases, they obviously do have sufficient ability to learn how, because they were able to learn the commercial software they're currently using.
As for time, yes, learning always takes time. (Thus my comparison to learning a new commute.) But suggesting that someone learn something new is not stupid or unreasonable, especially if the thing they currently use is not serving them well.
- In response to that paragraph you added after I replied:
I don't know why you would think that cherry-picked and extremely specific scenario is somehow representative of the general subject we're discussing. Of course situations exist where learning alternative software isn't the best answer. That doesn't make it wrong for people to suggest the alternatives. Quite often, they're perfectly viable, and it's perfectly reasonable to try to help by making someone aware of them.
Do services count? Because in that case, ride-hailing. A replacement for services like Uber and Lyft.