It'll initially top out at 'just' 1Gbps for most customers (Gigabit Pro's 2Gbps is still an outlier), so there won't be an incentive to ditch Google Fiber if it happens to reach your neighborhood first. However, DOCSIS 3.1 can scale up to 10Gbps in ideal conditions. Even if it falls short in real life, that still means that a compatible cable modem (due in early 2016) could give you multi-gigabit downloads in the future. Whether or not the service will be worthwhile is another matter. Those breakneck speeds won't matter much if they're priced out of reach for most people, such as the $300 per month that you pay for Gigabit Pro. So long as the costs come down, though, this could be the move that brings truly quick internet connections to a large swath of the American public.
[Image credit: AP Photo/Gene J. Puskar]