I consider AGPL a poison pill in my work. That is not true with a suitable commercial license, although I expect a lot more commercial product (support/features/etc). As you note, your objective is to prevent commercialization of your software, but radically speeding up analytics is primarily a concern of large organizations so it seems like a mismatch in purpose.
That's up to GCP then. I'm sure OP would be willing to license pgrust to them for an appropriate price.
You should be setting up a CLA process then ASAP if you are looking to take outside contributions.
Will await a MIT based fork myself.
AGPL is untested in courts. There is no definitive definition of what could be considered within the blast radius such that it would require AGPL licensing.
There's a reason AGPL is banned at Google and most sane companies. It's simply too dangerous.
You can't simply say "clients aren't bound" because it depends.
I'd rather see the BSL used here to be perfectly honest. At least it's simple.