What do you say to people who want to stop using Open Source software licences and instead use 'Fair Source' licences intended to prevent cloud companies monetising the works of others?

For instance, here's discussion about a blog post titled So you want to compete with or replace open source https://news.ycombinator.com/item?id=40993787

With no copyright, it would be akin to using permissive BSD-style licensing, which is by no means everyone's preference.