First, VirtualBox is an Oracle product, so I'm not sure which side you're advocating :) More to the point, I think VirtualBox is the equivalent, broadly, of VM

First, VirtualBox is an Oracle product, so I'm not sure which side you're advocating :) More to the point, I think VirtualBox is the equivalent, broadly, of VMWare Workstation/VMWare Player; which is a specific individual product that runs on desktop as type 2 hypervisor and a teeny tiny bit of the broader VMWare ecosystem (probably neglible part of their revenue). I don't know if VirtualBox has any product or share in server/datacentre space? Whereas, VMware is absolutely positively huge. The core ESXi product, sure; but again the ecosystem around it, from vSPhere/vCenter to vRealize and Orchestrator and nsx and vSan and everything else, the management and automation flows are pretty well integrated (externally; I'm sure it's a acquired/developed mess internally as every other IT product ever:). It's a bit like... I don't know, "what does Window Explorer have that File Commander doesn't"? It's a valid question that has a rational answer which is useful for limited use cases, but it misses the very very big forest (Windows and Office and Azure etc) for very minor trees inside of it Hope that helps a bit?