IBM, HP, Oracle, and literally a thousand other companies make that very unlikely.
In fact, there are many of us that wish Sun would either drop the hardware focus or just spin off the Java division into it's own independent group.
Besides, I'm a developer -- I will just move to the next technology. Could even be .NET, as you already know, I'm working with C# also. I'm technology agnostic. Ironically enough, I'm exactly the type of developer that .NET is going to have to win over if it expects to survive.
I would *never* lock myself into a single vendor, like you have. I have skills, so I don't have to.