I'm personally fond of Sandstorm (which I contribute to), but any number of Docker-based self-hosting platforms either available to run yourself or sold as a SaaS (Cloudron, Umbrel, Tipi, a half dozen others in development, etc.) solve the problems that Solid solves, "owning your data", without the huge downside that Solid creates, "giving your data to outside servers willy-nilly".

The thing is Berners-Lee is a web standards guy, so he wants to solve the problem with a web standard. But a web standard is not necessarily the right solution here. And I think it's unfortunate some tens of millions of dollars of funding have gone to a solution that doesn't really solve the problem.