1) Some of us no longer trust the company not to bait-and-switch again. 2) It's almost guaranteed that at least future useful developments will happen under the proprietary and consulting-encumbered license.
I'll admit the company has every right to execute on #2 - t is 100% without doubt going to have me reconsidering our use of redis here, and keeping a very close eye on what Amazon and Google (and others) do in response to this, as I decide what alternative to the consulting-encumbered software we might use going forward.