These things take time, and this was probably in the works from before.
The "time to build" nonsense was about spending taxpayer's money. That is, telling the American government how to spend it.
Consider that a16z and its clients probably do not pay much taxes. Certainly they pay less than people who cannot afford the same level of profesional services required to reduce their tax burden to the same extent.
If America builds infrastructure and better educational systems, a16z and their clients will benefit, along with the folks who actually paid for it. Whether those benefits would be disproportional in favor of a16z and its clients is left as a question for the reader.
If someone figures out the next step of search, google could disappear quickly. AT&T, not nearly.
I guess even they couldn't convince themselves to want to build things. I suppose that hollow rhetoric was for everyone else and not them?