He lists examples in the article.
Once upon a time, we had a solid way of overcoming the problem of lock-in. We’d reverse-engineer a proprietary system and make a free, open alternative. We’ve been hacking fire exits into walled gardens since the Usenet days, with the creation of the alt.* hierarchy:
https://www.eff.org/deeplinks/2019/11/altinteroperabilityadversarial
When the corporate owners of Unix started getting all weird about source-code access and user-modifiability, we didn’t insist that Unix users were bad people for sticking with a corporate OS. We reverse-engineered Unix and set all those users free:
https://en.wikipedia.org/wiki/GNU_Project
The answer to Microsoft’s proprietary SMB network protocol wasn’t a campaign to shame people for having SMB running on their LANs. It was reverse-engineering SMB and making SAMBA, which is now in every single device in your home and office, and it’s gloriously free as in speech and free as in beer:
Is it? I know it’s been moved to Wordpress, but I haven’t heard about this.
Ghost can apparently be used to manage multiple blogs under different subdomains. Might be worth looking into when their ActivityPub supports goes out of early access.