It is not a strange logic and I am not talking only about quality.

I am talking about IT being one of the few professions in 2016, with individuals that expect to earn money while using tools produced with the effort of others for free (beer), while not giving anything back (not even bug reports, unless their own customers press them against the wall).

So the question isn't about the quality, rather how many Emacs and vi users would have actually payed for them, if they were only available as commercial software?