Most people I see using winrar have not paid for it. And they have to deal with the snag screen every time. I think it has to do with inertia.

Educate them if you can. Whenever I see someone using crapware like bandicam I give them a link to OBS Studio and briefly describe its advantages. Same for winrar and 7zip. They usually don't know any better and were using whatever everyone else was using.

Companies tend to use it and buy new licenses due to the same inertia you mentioned. Although the more cost conscious will at some point switch to the free alternatives.