The Soda Ban is NYC-only, in response to the city's childhood obesity epidemic. Albany is a long way from the NYC mayor's office, both geographically and politically ;)
So that's why NYC kids are so skinny now.
The ban got overturned for exceeding the authority of the health department.
Has an underground black market for large sodas been established?
Yeah, it's called "buy two smaller ones or take advantage of the free refills".
No, that was NYC's municipal government, not the state.
Which isn't an entirely unreasonable response to obesity.