They are cutting back on sports not getting viewers. They are always considering adding other sports that might get the younger viewers to appreciate the olympics again. At least thats how I took the press conference they did when they explained why they were considering releasing some sports.
Sports like Tennis also have a funny irony. I doubt there are many Tennis players who put much credence in the Olympics offering the most competition. The grand Daddy of tennis will NEVER be the olympics, kind of the opposite of what the olympics should be