62% found they routinely got less than half of the top speed
Totally meaningless statistic unless we know how many of that 62% ever get the top speed.
The current infrastructure is not able to provide the advertised maximum speeds to every household. Skipping the detail, but basically the longer your line from the exchange, the worse speed you can achieve. Assume for the sake of mathematics that users are evenly distributed from the exchange, the exchange serves a radius of 5 miles and that you have to be within 3 miles to get the top speed (I'm making these numbers up). pi r squared: 28 sq mi get top speed, 50 sq mi get less.