It's not just conservative companies, but also independent developers and startups that may not want to start investigating third-party languages, of which ther

It's not just conservative companies, but also independent developers and startups that may not want to start investigating third-party languages, of which there's no shortage. Particularly if they're up against other barriers like not being experienced at Android, in which case they may not want to learn the Android frameworks AND a new language at once. Or they have to learn some new Android frameworks they didn't use before, like the camera APIs.