That includes expert users who don't need enterprise support. If you make them use something else, then that will become the most battle-tested enterprise distribution.
It also includes developers. If they run on your platform, then it will get native support. If you make it easy for them to test on your platform, then it will get first-class support. If you make it difficult and they feel like second-class citizens, you will get no support.
Open source is about community, and RedHat has made it clear that the only community they care about is companies willing to pay for expensive per-server licenses.
With the rise of the cloud and containerized workloads, the business model of providing long-term support for on-prem servers is declining, and they are just milking the customers who remain.