That was my point too. There are valid reasons to go with closed source, open source may not be a viable option for a variety of concerns, including economic realities. The person I was replying to raised the issue of corporations that take and do not give back (which definitely exist) and I was responding to it.
Yes, we don't have a great business model for this yet. We see the problems caused by things like Elastic Search either locking away important features or getting killed by well funded incumbents like Amazon.
My response was asking more, when you said "use cases" if there were non-economic ones you had in mind.
Years ago I got it in my head that we needed an open source copy left license that allowed for automatic licensing/royalty schemes in commercial use where the money would flow down to the project. This would give end users complete control over the software and modifications to the software, while distribution and money generated would be shared up the supply chain.
I still would like to see something like that but have no idea how to frame it.