Expect R is dominate as the SAS legacy begins to die. R is spreading across a lot on analytics departments in Universities, from Stats to Finance. The holdouts are the CS departments, who have rebranded much of statistics into data mining/machine learning and, smartly, use python.
Another important metric is the use of R in clinical studies. The FDA now accepts much research in R whereas before they did not. That is a slow moving change, and shows R will be around, at least in use by Pharma, for a while.
