I don't see any alternatives to open core there(?). Points 1 and 3 just mention the usual problems with OSS, not solutions.

> "IP is free, support for $$" like Red hat is a viable business model but captures only a very small part of the overall value. The much larger part is captured by private sector selling SaaS, Cloud infra vendors.

Isn't this the value captured by open core? Support is only part of premium services, while companies are free to choose any additional revenue stream (SaaS, extensions, integrations, etc.).