But they aren't about to open-source their infrastructure. Wouldn't matter if they did -- you can't open-source a bunch of contracts with trucking companies, n

But they aren't about to open-source their infrastructure. Wouldn't matter if they did -- you can't open-source a bunch of contracts with trucking companies, nor would any sane company want to open-source their testing routines for the hardware they build in house to manage the mess. Parts of the infrastructure are, however, published as patents :-) Google's operational efficiency in deploying new capacity is the crushing advantage they possess over 99.999% of the companies on the planet.