When the Verizon tech did the install, he looked behind one of the wall plates and said 'your house is wired for CAT5 but I don't know where the access point is,' and just plugged the cable into a router in the back of the house.
I would love to have it available at each of the wall plates in my house. I have FiOS internet (200 Mbps up/down service), via an Ethernet cable entering my house from one of their ONT boxes outside.