Have you ever seen Nutanix's pricebook as well as VMWare's?
Spending 2x on hypervisors is dumb because now you need 2x the headcount on SMEs because you'll need both a Nutanix and VMware SME, as well as 2x the contract negotiations, and the money you are spending on both could have been better spend improving your product or hiring more people to sell your product.
It's a bad use of capital. At the end of the day, Infra is a cost center. It's something used to keep the lights on, but doesn't expand your TAM.