https://forums.sonic.net/viewtopic.php?f=10&t=1085
According to the CEO, though some of the issues have been related to permitting/bureaucracy, they have also had some contractor-related setbacks as well.
Was paying $100/month for 20Mb Comcast. Now paying $40/month for 30Mb Sonic. Penalty for breaking the 12 month contract early is $150. So after 2.5 months of good service, I'm in the black even if I have to cancel early.
Anecdotally, their technicians were the smartest I've ever met. I learned a lot about DSL and how they get 30MB out of 2 lines. I also learned that my 2014 MacBook pro can't even handle more than ~20Mb over wifi. My iPhone 6S is now running at about 27Mb, and I get 35Mb when wired to the router. I'm in the Inner Richmond.