This is happening already for much of the 3G internet (at least here in the UK). Perhaps we'll end up with an internet-routable IPv4 address being a chargable

This is happening already for much of the 3G internet (at least here in the UK). Perhaps we'll end up with an internet-routable IPv4 address being a chargable extra from ISPs. That could be easier for them than rolling out IPv6, at least in the short term.