I don't believe this to be the case. Sure, software can have growing pains, but there's nothing to stop free software projects from moving to embrace what people love about proprietary packages, delivered in a user-friendly way.
Software doesn't need to be better to win. Look at Google Docs, a shallow imitation of what document editors were doing even in the early 90s. It became popular in spite of it. (And don't say it was just because of Google's huge influence; they've had plenty of reimplementations-of-what-we-already-have-except-on-their-servers that have failed miserably).
I look at Google Docs as an example of someone saying "right, we mightn't have all the answers, but we have the answers to what people want right now", which turned out to be easier collaboration rather than nitty-gritty, barely-used features. Nobody except company IT admins gave a flying toss about whether moving to Google Docs had any licence or implications on software freedoms; it was inferior to Word (and others) in so many ways, remains so, but does what users want.
I am unconvinced that the argument that users should ever settle for inferior software just because it comes with superior freedoms is anything other than masturbatory. It has the pretence of being user-focused (freedoms) without actually being user-focused (what users care about). I think it would be a better strategy to focus on the latter whilst also promising and delivering the former.