There are a lot of big companies with ThinkPad P-series mobile workstations on 7 that would cost quite a bit to replace. And the main concern isn't the cost of replacing vs. licensing, but of updating line-of-business workflows, custom apps, and user knowledge.
> it is not difficult or expensive to acquire
For reference, these options are more than the replacement cost of many business PCs. I'd say that's pretty expensive.
And especially when you note that loss of support is often the only reason they have to change, it starts seeming a bit unreasonable.