Correct, and not really weekends altogether, but what network realistically runs spare capacity in the multi-Gbps range on IPC that's barely utilised or intermittently utilised? So there are some unique challenges that need to be factored in and a fair amount of planning ahead before simply launching and then finding your DSL users suffering for example. This is why I've been saying for a while that simply demanding lower and lower pricing means the end user feels the pinch and it does limit the kind of advances we can make as new technology comes to the fore. If it's all about bottom line to the end user then there's less recapitalisation into the network to afford you better experiences - I am however talking generally here and in my personal opinion (with a bit of a grasp of the costs and complexities involved).
It's why I've tried to be as transparent as I can. I prefer to be able to have an intelligent and open discussion about these sorts of things rather than accusations that "all ISPs are money making machines and thieves and drive Lambos on our dime".