Re: One VM
"Then they kill off the old Win 7 licences in the market [...]"
I bought a few spare copies of W7 - although too late to get full retail ones. Some of the decommissioned P4 PCs here have full retail licences which theoretically can be re-assigned.
Even have a small stock of spare "fast enough cpu" motherboards - and a couple of spare Dell W7 "business" laptops that were glutting ebay a while back. Linux Mint will eventually take care of my browsing and email on the laptop.
That just leaves one online application that would be time-consuming to convert. However a recent Chrome update has just broken the Excel/Selenium Web Drive mechanism - so that may be the end of it on Windows anyway.