I do suppose that anyone’s friends might easily fall into this category 
One Australian professor, in his post on this forum, explained that in over 20 years of teaching he only met one student running Linux on his personal computer [1]
As long as the vast majority of computers are sold with pre-installed Microsoft and Apple I don’t see any forthcoming major change about this situation. Just my view, of course and I would be extremely happy to be proven Wrong…
Probably, there should be some laws forbidding this (but again it is quite unlikely to occur, IMHO).
For instance the law enforced by the CEE against Microsoft to forbid this company to ship by defaults its browser Edge [2]. At present, in Italy (but I suppose in Europe as well), when you buy a new pc you are asked which Browser you want to use in the future.
Personally speaking, I mostly run open source software (LibreOffice, Rawtherapee, GIMP etc) on my PCs (aside from Windows…) but I DO understand the will to remain with proprietary softwares as regards graphical applications. The products of Adobe, just to name one company, are extremely powerful (sorry to state the obvious…) and their documentations is magnificent and quite often free (e.g. with YouTube).
[1] New HDR algorithm in Darktable anytime soon? - #51 by Terry
[2] EU ends competition case as Microsoft offers choice of web browsers | Technology sector | The Guardian