Interestingly Microsoft also had it's own set of problems with Java when Sun was at the helm. Windows used to ship with Java and Visual studio had java as a first class citizen. Microsoft being microsoft, added extensions to Java which only worked on Windows which Sun didn't like. Microsoft ditched java, stopped shipping it with windows and created C#. Thanks to Microsoft , C# is a far better language than what Java is today and developing on windows is a breeze.

Google on the other hand, has not focussed on developers much. I've been building on android for a few years now and the IDE is derived from IntelliJ ( Earlier you had to use eclipse which was even worse ). They could have easily gone the MS way and used another language or one of their own. Major language features are delayed, the code is incredibly verbose(kotlin tries to solve that to a small extent) and they are fighting a lawsuit which if they lose would be pretty expensive.