I can’t think of a good story from personal experience, so I’ll share a wild objection from some guy on the internet from, I think 2007. The story pops into my head from time to time. This guy insisted that it would be impossible to create an entire OS that can run from start to finish without the resources of a major software company. He argued that therefore Linux must actually be a pirated, reskinned version of Windows. danielandrade.net/…/linux-windows-misconceptions-…

I checked the Wayback machine to try to find more messages from that thread because I think he kept posting and doubling down. But pulling up ancient ZDNet forum posts is slow enough that I gave up.