It was just announced that Apple bought Cue (Appleinsider), a Google Now-like service. It occurred to me that the app stores, whatever you call them, have for years been a sort of service incubators for mobile players.
Siri bought by Apple. Bump by Google. Google also bought an office suite or two like Quick Office. I seem to recall that both Microsoft and Samsung have also dipped into the app store and plucked out an app maker or two. Both Apple and Google have bought map app makers too.
Even Facebook, a mobile player of sort but not a mobile platform/device maker, even went into the app store and bought out Instagram for $1 billion.
More of this is going to happen in the years to come as competition in the mobile space as well as the future of computing in general continue to become a bigger and bigger slug-match among these cash rich tech and platform companies.
So, if you're an app maker or is considering it, keep this in mind. Selling to mobile users is great but getting bought out because your service or app is so freaking awesome that Apple or Google finds you irresistible is even better.