R is on the upswing so I wouldn't call it "still used" really
That said, you can make money knowing R. I am doing it, but you really need some database experience and possibly some python, c++ and the like.
SAS won't die in a _long_ time either, in the banks I've been too except for this last one have been using SAS almost exclusively.
The problem with SAS/R code is that neither is usually written by a programmer but a statistician that want something to work there and then.
It can be a nightmare if you inherit too much legacy code.
Also, you actually need to know statistics to be effective