Comment by morshu9001

I didn't say that fragmentation is the only thing that makes them unusable, it's just one of many. Yeah it is a big thing though.

People do have difficulty switching between Mac and Windows, but each has critical mass so it's still easy to get help with the finer details. And unrelated to fragmentation, anyone tech literate won't have nearly as many showstopping issues to ask about there in the first place.