Yes Google, please buy WhatsApp, and then make it compatible for computers (without retarded emulators such as borked and broken Bluestacks) so I can finally actually use it.
For a cool billion dollars you could make your own messaging company and drive them out of business. Google already controls large parts of the Android ecosphere making a messaging platform that integrates easily with Android would be easy. You then just have to build a desktop and an iOS client. People would then find they would need WhatsApp less and less.