“Some people who advocate against free software claim that it’s
bad for the economy and not sustainable in the long term, because
the lack of direct revenue on developing free software makes it
harder to make money out of developing such software. If generating
direct revenue out of software development is not possible, they
claim, then less people will be inclined to write software
professionally. In turn, this will mean that end-users will have
less high-quality software available. Is that really true? Let’s
find out.“First of all, the statement that free software generates less
direct revenue is probably true…”