> VMware is essential for the operations of Tesco’s business and its ability to supply groceries
Guess you're fucking it up big time somehow then. Why would you tell people this? "Hey, we managed to make ourselves permanently dependent on some bullshit tech, please partner vendors, fuck as much as you possibly can so we can pass it off to shoppers."
There is always some dependency which would be devastating to lose. Maybe it is VMWare, maybe it is your Oracle database, could be your Visa payment processor. Sometimes you have to accept the risk and move on without owning a copper mine so as to smelt chips.