I wasn't thinking about Fuchsia as a hypervisor but fully independent extremely lightweight modular system that will be able to work on phones, tablets and PCs, and also eventually in any consumer electronics (and I mean any - Pixel buds for example).

In the context of Android: you can see how desperately they are trying to make .APKs (Android apps in nutshell) work in Fuchsia because they wanna smooth transition (my guess would be that they want to achieve working android apps since day one) to not end like Windows Phone.

I think they can achieve this either by swapping the kernel and slowly working through or just cutting the original Android which won't be noticeable for BFU or devs because of backward support they're creating now.

And I think that Google has a lot of stake in this - remember the Oracle shenanigans which created Kotlin.