The goal for both Meego and Android should be to get their kernel customisations back into mainline.
They benefit everyone then, provided they are not customisations that only benefit the android stack.
As for using Dalvik.. doubtful. QT is the strategy and it goes beyond Meego, and is native.
"Stealing" is an odd term to use for open source. Sharing it is the point.
We don't need to worry too much about Nokia's involvement in MeeGo either - you can take your hat off. It is an open source linux distribution, and the more people / businesses that get involved, the lesser is Nokia's influence. My hope that this goes the way of other distributions, where corporations contribute but the distribution has its own life. Once MeeGo has reached a usability milestone we'll see xda port it to everything they can get their hands on, then demand will increase for handset manufacturers will be pressured in to providing open source (or at least blobs) drivers for their hardware. Then the tables will be reversed, asking not what handset/OS shall I buy, but what handset shall I buy, and which OS shall I install on it.
And it will go the way of the PC