My understanding is that homeowners in the bay area have some next level NIMBY ism that even Google can't overcome. Those fiber huts have to go somewhere...
Actually we finally got NBN on my street and I am syncing at 75mbit (paying for 100) and frankly I am over the moon. The fastest I have had previous, after living all over AU, was 14mbit down, and I was the envy of my friends for that roaring waterfall of data.
Everyone else I know is on around 8mbit even in 2018.
The cause is not NIMBYism, or any other negative traits you might try to tag on to people from the Bay, but rather, the existing telecom companies and their attempts to protect their pseudo-monopoly.
https://www.mercurynews.com/2016/03/10/google-fights-att-com...