If people are really interested in speeding IPv6 adoption, the fastest way might be for government and/or industry to subsidize IPv6-only broadband for consumer

If people are really interested in speeding IPv6 adoption, the fastest way might be for government and/or industry to subsidize IPv6-only broadband for consumers (via existing ISPs). Imagine $1-5/month DSL to your home, price-locked for 3 years--except it's IPv6-only. Lots of cost-conscious people would sign up or switch to save $xx/month, even if it meant their Internet access was crippled for a while. But it wouldn't be crippled for long, because with such an underserved user base, the major services most people care about (Facebook, Google, etc.) would very quickly start to cater to it (even if the demographics did skew low-income), because it would be a green field and a big opportunity to build longer-term user relationships to monetize down the road.