Yup, I assume they're gonna keep them in house as a competitive advantage for a time. I doubt they'll do it forever; the most valuable part of NVIDIA's CUDA is the ecosystem, and I think Google knows that.
So... just use Google's machine learning cloud thingy.
The software can build the community, where the supercharging is only available when you run it on Google cloud.
(although GPU performance isn't bad either, so you don't have to, thus community)