It's the protocols
Clients, databases, and even languages may change but I'm pretty sure that SQL and HTTP/REST/JSON will still be around.
A LAMP stack (or if you insist MS's equivalent) can talk to the middle tier and serve up mobile web pages which work for iOS and Android as well as Mac and PC. Later on native iOS and Android clients can be written if the need arises.
If you think native Android clients will become popular then that kind of goes with Java as the language for the middle tier. No need for your development team to be so much of a Jack of all trades.
Biting the hand that feeds IT
