I think hiring people traditionally is better for the bulk of the work. If people want to contribute for free they can, what they’d get out of it is if they get

I think hiring people traditionally is better for the bulk of the work. If people want to contribute for free they can, what they’d get out of it is if they get to choose what to work on eg fix the bug that is most annoying to their company so a win win. I’ve seen this done before and think it works well. Plug-in architectures can also help so people can contribute to an ecosystem with their own open source free/pro edition work like is done with Wordpress.