I think deadlines are probably also a big factor. Many OSS developers build their projects in their free time for themselves and others. So it could be a passio

I think deadlines are probably also a big factor. Many OSS developers build their projects in their free time for themselves and others. So it could be a passion project where someone takes more pride in their work. I'm a big advocate for that actually. Much commercial software feels like it is duct taped together to meet some managers deadline, so you feel like 'whatever' and are happy to be done with it.