[carussell]

1. The ReactOS project's implementation of Windows APIs is purely for compatibility reasons; on the other hand, Android's implementation was not meant as a compatibility layer for existing apps. (In fact, that Android didn't implement a compatibility layer was a huge sticking point for the Sun contingent within Oracle—although if we're honest, we know the motivations for Oracle proper are the dollar signs.) It wouldn't be a good idea to try and draw direct parallels between the two.

2. Oracle v Google still isn't over, so even drawing any inferences about Oracle v Google itself would be premature.

3. The copyright holder here is MS. Any action on their part to go after ReactOS now be the undoing of all the goodwill they've built in the Nadella/MS-on-GitHub era. The result would be (a) a bunch of I-told-you-sos from the leery folks still holding on to their grudges today, and (b) a massive, massive, innoculating "fool me once…" reaction among the folks who'd actually been made suckers for not heeding the grudgeholders' warnings. All in all, it would be a spectacularly bad idea for MS at this point, especially given how much weaker their empire has already gotten in the last decade.