This is a reform won by the masses, people seeing they can do things like this will actually promote socialist revolution in the long run. Especially if and when the capitalists start moving aggressively against these stores, and if and when the Democratic Party starts trying to reel in Mamdani (and prevent him from saving their party with social democracy and prolonging American class peace). We win in a negative way when such things are teased out; and in the meantime, we enjoy some (maybe, big maybe) cheap food.