Earlier quoted context omitted.
You don't pay for the support requests, you pay for the work of letting you update to the next minor release at your own pace, having those updates be rock solid, and having security fixes even on older releases. In other words you pay for not having to open support requests.
When a free alternative (CentOS, Rocky) exists, you can get those benefits without the cost. The only real differentiator RH has is support. Being an open source company means that RH has a non-standard business model and should expect non-standard profits. Their business model is inevitably doomed, but rather than innovating they are going with the "lock-in and gouge" model, exactly like Oracle.
How is that lock-in from Red Hat's part?