Completely agree! I purchased CS6 around 2012 and use it to solve graphical tasks for a client even today. I know that Adobes stock went up with ~25% (or was it more) when they announced the new subscription/robbery model, but I'm sure a lot of customers would like to do like me and keep getting value from the old investment by "owning" not renting CS<x>.
Only if you HAVE to be using the latest and greatest SW features, then the math might also work for the customer.
PS.: Too bad that my Macs are no longer able to execute CS6 as there is some 32bit code in CS6 and the newer Mac OS's only want to play with 64bit apps, that's a shame (but here Windows shine, by always(?) being backwards compatible (my client is a Windows business, so here that's not a problem…