Hmm. I'm not so sure. There's a way to see Google's behavior where what they're doing is precisely that.
Predatory pricing exists when you try to take over a market by selling something so cheap, other competitors are driven out – or prevented from entering, since they couldn't recoup the costs involved in developing a product.
In league with their manufacturing partners, Google has their own cartel, attempting to homogenize the smartphone landscape under a single, free OS.
The incentives are obvious: it's much easier for Google to make its ad money if it controls the next big platform.
They may have dressed it up as pious and open – but for their purposes, it's a land grab. Is it anticompetitive? I'm not sure. My antitrust scholarship began and ended with The Microsoft File back in the 90's. But I'm also not sure it's any better than whatever satanic pact they are intimating has been formed by Apple and Microsoft.
Google's argument here is summed up as "You could trust us with those patents. But we didn't get them. You can't trust the guys who did get them." I'm pretty sure at this scale, with this much cash on the line, business just doesn't work that way. Google will run over anyone to keep their ad money flowing, just as Microsoft will run over anyone to keep their license money flowing. Why should we side with one cause over the other?