I think a wide swath (very likely the majority) of the community is totally fine with not-open licenses. It’s the default condition for new code and I personally have zero issue with it.
I think more people are put off by perceived bait-and-switch or claims that a given piece of tech is open (with all the benefits that come from that) while making it not actually open.
If it’s a duck, call it a duck. If it’s a hunting decoy, don’t call it a duck.
In the end, this is precisely what the license change is trying to prevent. It's happened to several database companies at this point, and they're simply trying to hedge things off on competing SaaS providers (their commercial model).
I know some may not like less than "Open Source" licenses, but the reality and practicality of the real world does at time necessitate it.