Cities or counties suddenly having to take over lots of road, playgrounds, sidewalks, street lights, and etc is going to be a big drain on their budget. Sure they could run with the HOA's money for a while but eventually they're going to have to pay.
That is the best possible solution. That's how it works in my neighborhood and it is the best answer.
This neighborhood has a few amenities like soccer fields, tennis courts, bike/walk trails and exercise stations. In the early days of construction there was some debate about a HOA but that was fortunately shot down pretty quickly as far too toxic.
Instead, there is a property tax assessment on all houses in the area that covers for the city to maintain these common areas. Sure we pay for that, which is fair. The areas are maintained, they are open to all which is great, and there is no nasty HOA meddling in how people paint their houses or what flowers they plant or what car they buy. Best of all worlds.
