Is there not an alternative to what you use?
That's not the issue in IT anymore. There are loads of alternatives, but rebuilding existing infrastructure on these kind of scales is nearly impossible without causing some serious downtime, loss of money or maybe even loss of life in case of some medical facilities.
That's vendor locking for ya...
I took a good look at Apache CloudStack. I of course have been migrating stuff to k8s and working with cloud native stuff that can be hypervisor independent or bare metal even.
I'm this close to an NSX-T cert and that will be the last one. That will be in high demand for quite some time I'd expect.