As opposed to leeching from open sourcing your software just to undercut the competitors and then bait and switch into closed source? There's absolutely no problem with wanting to sell your software and being proprietary. But the issue is really that they are a multi million or even billion (hashicorp) who built that value on top of being open source.

They are completely within their right to switch licences but it doesn't mean that we have to fall for the narrative that they are protecting themselves from the big guys. Let's be honest, no one would've used redis or terraform if it was closed source. Or if it wasn't available on the big guys platforms.

Redis started as a community project and had tons of community contributions. I'm sure that their effort to gain fairness for the smaller guys doesn't apply to anyone smaller than them. It's ironic that they did exactly what they imply the big cloud players did, scoop up open-source work to build corporate value