Simple market dynamics, at least in France. All DSL providers here deliver a set-top box that is a modem, a router, a firewall, a Wifi AP, a VoIP gateway and a TV streaming device. Thus nobody buys their own router/APs anymore, which were often installed in their default configuration by unknowing users. The ISP boxes are WPA (and sometimes MAC)-protected out of the box, and so open wireless (which was often involuntarily) has all but disappeared during the mass rollouts of the last few years.