[icebraining]

I think there will remain a minority, yes. Probably older devices which still work fine otherwise (especially appliances, sensors, etc). We'll probably see a bunch of such IPv4 LANs behind NAT64 gateways, so that the rest of the 'net can still talk to them.

But I don't think having more free space will make much difference; they can use a reserved IPv4 address (in the 10.* range or so) and have a public IPv6 address configured in the NAT gateway.