It's too hard to judge which apps started this year will most likely have billion dollar market caps - after all, if you'd done that in 1996, you'd think "AltaVista, Excite, Value America" and other similar nonsense.
Instead, how about looking at what companies with billion dollar market caps are buying. After all, that's the biggest statement of "We think this is really promising, but we can't build it internally, so we're going to fork over a billion dollars for it" that a big company can make.
Judging from this, the big languages seem to be Python (YouTube, Reddit) and Java (FeedBurner, Zenter). There are also a lot of recent acquirees where I haven't seen anything about their technologies - it's certainly conceivable that many of those are C++. Really, if I had to draw conclusions, it'd be "The language you use doesn't really matter - the important thing is that you build something people want."
Instead, how about looking at what companies with billion dollar market caps are buying. After all, that's the biggest statement of "We think this is really promising, but we can't build it internally, so we're going to fork over a billion dollars for it" that a big company can make.
Judging from this, the big languages seem to be Python (YouTube, Reddit) and Java (FeedBurner, Zenter). There are also a lot of recent acquirees where I haven't seen anything about their technologies - it's certainly conceivable that many of those are C++. Really, if I had to draw conclusions, it'd be "The language you use doesn't really matter - the important thing is that you build something people want."