> What basic income proposes at it's root is attempting to decouple basic necessities from the larger market economy.

I don't think of it that way. I think of it more as establishing common ownership of the social foundation on which the entire market depends, charging rents on them, and distributing the rents to the owners (i.e., all members of society equally).

> I think however that fundamentally we will need to change our moral attitudes broadly to actually embrace the "post scarcity" world.

I think "post scarcity" is a bad term -- its not a post scarcity world, and if it was, we wouldn't need to worry so much about how we distribute resources. Its just a world in which the nature of the market opportunities is such that the problems with our current manner of managing distribution of resources become even more pronounced.