Grocery stores are not going to be taken over by the government. Mamdani wants to open a new chain of government owned/subsidized grocery stores that can hopefully sell items for cheaper. This would save consumers money and create more competition in this sector. Although no one’s certain whether it will work or not.
also govt-owned grocery stores could offer affordable & healthy food in each borough. NYC already subsidizes private, profitable grocery chains, but the govt itself could operate them in locations business owners aren’t interested in. there’s more details about this if you’d like, all his cool stuff is on his website. basically, his campaign presented some exciting progressive policies in a really accessible way, which got a ton of ppl hyped in NYC and online
biggest criticism you’ll prob see is that tax increases will cause a mass exodus of the 1% and megacorps to lower tax zones this is overblown imo. they need to be in NYC to make their $$$. moving people/operations is costly itself, and equivalent income somewhere else isn’t guaranteed much of this comes from corporate advocates just fearmongering. they’ll never mention the loopholes they already use, and all the indirect + benefits of tax-funded transit, police, etc to the bottom line
Put simply, I'm sure some people pay hundreds of dollars a week on bus fares. this and people who don't ride the bus are the extremes. So if everyone in the city who has metro service, and is taxed let's say $10 a year for bus fares, in exchange for them being "free" they're essentially paying the hundreds of dollars of one person and paying themselves a bus pass.
He has pretty detailed plans about how they’re going to raise the money to pay for it all. And they’re kind of simplifying the grocery store thing. His plane is to open government owned grocery stores in food deserts, places where people have poor access to food because big companies won’t expand there. he’s not going to nationalize regular grocery stores.