There's a similar effort gaining traction in the Los Angeles area: https://www.communitybroadband.la/ I've also noticed that local municipalities are getting into the ISP business. Beverly Hills, for example, is currently deploying a city-owned/operated fiber-backed ISP: http://www.beverlyhills.org/fiber
NYC Mesh is doing very cool stuff--we wish them the best. We're in touch with a few other community ISPs who are growing organically in competition against big incumbent ISPs. It's inspiring.
Beverly Hills, West Hollywood, and Culver City are all constructing municipal fiber right now. In the case of at least WeHo and Culver, it's aimed primarily at businesses. Some residents may see fiber offered by the incumbents, but we did some math of those offerings and it was $133/mo for 1Gbps. It'd be more helpful for the community if reasonable speeds were more affordable and available, than only some wealthy neighborhoods getting fiber.