I genuinely wish what you speak of happens should reality play out that way, but I think a lot of people will die with shit eating grins on their faces, even after they run out of shit to eat, because it means someone with blue hair is starving, too.
A while later, the world is living in a dichotomy of people living off the land and some high tech spots of fully autonomous and self-maintaining robots that do useless work for bored people. Knowing people and especially the rich, I don't believe in Culture-like utopia, unfortunately, sad as it may be.
This is a problem our ancestors faced with the enclosure of the commons. As dispossessed subsistence farmers, they had no other option to survive other than selling their labor. Their land was privatized and with it their way of life destroyed.
We still live in the world where the commons is enclosed, subsistence farming is effectively illegal.
I like your optimism, though.