Revenue is irrelevant, profit is what matters. The vast majority of the cost of any redis service offered is going to be the cost of the underlying compute and disk resources used. In some cases the margins could be close to nonexistent after paying for the resources utilized and the people to manage it, and it's used as a table stakes service that needs to exist for people to want to use your platform.

The vast majority of these projects didn't seem to have a problem with large companies like Netflix using their software, even if it was put on a cloud server, as long as it was managed by Netflix. Now that the management portion is moved to the cloud provider, along with some amount of possible profit, it's a large problem? Was it not a large problem when the companies were using these projects directly? Was there not some assumption and hope these companies would use these projects by the people contributing to them?