Sure, but that still means that the fault of not being in the ecosystem falls on the person who specifically edited their license to not be a part of the full ecosystem going forward regardless of whatever reasons they had for doing that.
For those consciously omitting “and later”, the effect of not allowing that probably isn’t a fault, but a desired outcome.
“You can do A, B, and C with the software I wrote, or whatever X may at some future date decide you can do with it” isn’t something everybody is happy with. It certainly requires some long-term trust in what X will or will not do.
