Using Oracle product in a non-Oracle VM?

Now you get the privilege to pay licensing for all the cores in your environment where you can migrate the VM to.

With such a policy, what could possibly go wrong?

Free software saves money because you don't pay per core/processor/user/whatever. With proprietary software, you have to agree to auditing by the vendor (or their representative) and they decide whether you're in compliance. Why anyone would willingly agree to such agreements is beyond me.