Most high-security environments (banks, govt agencies etc) have a large on-prem footprint. Then there's specialised industries like manufacturing, science and engineering who typically have a bunch of embedded systems, often running ancient versions of Windows or something that needs to talk to a local ancient server. And many old companies have tons of legacy apps which are a PITA to migrate to newer infrastructure. So yeah, plenty of folks out there using omprem gear, it's kinda the reason why Broadcom is able to what it's doing - lots of suckers out there who're married yo vmware and can't get a divorce.