By "private network", do you mean inside a corporate firewall or a public vertical network that is using white-labelled technology? If the latter, do you want a service hosted and managed by someone else (like WordPress) or licensed software that you would install on your own cloud servers?

The ideal situation would be a PaaS that achieves the advantages of a hosted solution without compromising on the customer's ability to extend the platform into either their own environment or adjacent cloud providers.

Many companies have built successful revenue models around open sourcing the core platform and then monetizing the PaaS/SaaS offering.

Either way, happy to help anyway I can - thanks for following up.