Mamdani got lots of traction because... (Public Board)
The only reason everything is "financialized" is because we have a corrupt monetary system. If banks and hedge funds can borrow at 3% when true inflation is 10%+, of course they're going to max out their leverage and buy up everything.
Government causes a problem. They say "This is a failure of the free market!" The "solution" is even more government regulation, which makes the problem worse. It's an endless cycle of escalation.
For example, the reason healthcare is a mess is because government artificially restricts the supply of doctors with the licensing cartel. Fix that problem, and most of the other problems would go away. But doctors are very happy with the way things are now, and are making so much money they will lobby to keep it going. In all discussions of healthcare problems and healthcare costs, nobody ever mentions the licensing cartel for doctors.