…otherwise they’re net negative to society
It’s a public service. The end goal is the service, not profit. Services help society, profit only helps investors.
For most things I default towards free and open source software. If that doesn’t work, then I will look for a proprietary solution. There’s only a few areas where this is relevant.
I use Chrome browser for work. I have Steam, which is fantastic but is absolutely proprietary. Not much outside of that.