Well, if I want to count whenever Sony has helped a format get developed, then yes they have been on the right side of history more than a few times. But they keep pushing formats that are essentially garbage.
Compact flash never stood a chance, but SD remains the gold standard. They need to ease development for the memory stick (well, at this rate, they should make it easier to develop for ANOTHER format) as it never seems to stick with many companies. PS3 is hard to develop for, and Sony doesn't give development studios any help. Now lets look at the Memory Stick... who actually uses it, outside of Sony?