alt Hacker NewsCloudflare OS does have the important risk-mitigating feature that you can fork it if the vendor becomes hostile to your interests. You can't really do that with managed services like Workers (workerd exists but isn't a drop-in replacement for the entire Workers platform).
Whether forking is economical depends, of course, on your scale and on how many others are in the same boat.
in the world of AI, forking is so much easier.
I was messing with a closed source tool from a vendor, and turns out they didn't support my use case (they were Mac only, I needed a Linux version. And I wanted it in a different programming language than they had used for maintenance and performance).
Pointed Fable and Sol at the binary and the symbols (most of the work was through http, to be fair), and a few hours later I had a fully functional version with additional features.
now of course the legality of that being closed source is iffy, but it was for personal use. In this case its open source. Need to run this on another platform ? You probably can get very far with a prompt or two.