EMC bought VMware for $650 million and Dell bought EMC for $74 billion and now sold VMware for $61 billion so it worked out for someone.
But at the time virtualization was considered as something "to keep that old Windows NT server/software running" - not foundational for all cloud services ever.
A broken clock is right twice a day, and even EMC CEO Joe Tucci was right once in his lifetime.
But don't look at his other acquisitions.