GPL != Generate Profit License
Why so much focus on the type of license and not the type of financial incentive? Redis just wants to breed billionaires now, read the last paragraph of the article. I don't honestly see a problem on that specific point.
If you can become rich off of open source, great go do that. I don't think any of its care about that, even in our jealousy. However don't try to mutate licenses out of greed while maintaining a facade with the open source community, that simply just makes things too obvious.