OS's success is almost entirely defined by network effects. This is why the UNIX wars ended with everyone using Linux. It was available (for free) and lots of people used it. It wasn't better in any way, that came later. 'Disruptive innovation' in software is a myth.

'Power users' on HN are 95% software developers who have a very good experience with FLOSS because everything from the OS to the apps is written by them for them. This is absolutely not the case for anyone else. The number one reason people don't use FLOSS is because they can't get Adobe and MS Office. Without users FLOSS will never get these. Until FLOSS products are the plurality available on store shelves it will never reach the mass market. No one who isn't a software developer is switching to FLOSS and without a massive restructuring of society that will remain the case. I just wish we could be more realistic and work on finding strategies that would actually move the needle. Chiefly by lobbying governments.