It's here where the seeds of PA's destruction shall sprout from. I hear that Google is looking to unload Boston Dynamics... and Alphabet is looking to streamline things across divisions to concentrate more on products that are marketable... i.e. stuff they can sell.
Now, I don't think it is as Alphabet-wide as the rumors suggest. Alphabet's been pumping cash in research projects that have zero commercial viability, a lot of their research is 'pure' research - making humanity better by learning new stuff sort of thing.
But the clock might be ticking on Ara. Perhaps it was a little to out there a concept, who knows. I thought it was a pretty cool concept.