Are you referring here to Apple/Swift/iOS/OSX, and Microsoft/C#/Windows? If so, good point, if you're writing iOS mobile apps, or OSX/Windows desktop apps, you'

Are you referring here to Apple/Swift/iOS/OSX, and Microsoft/C#/Windows? If so, good point, if you're writing iOS mobile apps, or OSX/Windows desktop apps, you're pretty tied to Apple/Microsoft regardless of the language you choose. Not so applicable to Go - ppl mostly use it for writing servers running on Linux.