It's putting a positive spin on paying people a living wage. Unemployment goes up, support the unemployed with safety nets and raising taxes.
The problem is not the cost; the money exists in the economic system, clearly. It's simply an allocation issue.
But pessimists can keep carrying on with "the sky is falling" while progressive economic policies continue to march forward, bringing the US to parity with the living standards of other first world countries.
You must admit, this is a significant win for Sanders (Disney first, now Amazon). I agree with you that progressive policies have been dismantled over the last few decades, but would argue that the electorate is engaged enough now to claw back those losses (majority of Americans support universal healthcare now, for example).
My point was this is not the last win for Sanders and those who align with his progressive policies. Efforts will continue to drive up the minimum wage in all 50 states.