The only way to solve collective action problems in the real world is via coercion. That is, government.
Perhaps you have an issue with interpretation here. The pleasant story was the illusion here.
PS - I too loved the Richard Scarry books as a child and bought them for my children - and I'm not even from the US.
I think stories that describe better possibilities than what we have are useful cognitive and social tools.
Even though the children's books lack nuance. There are no problems with pollution and climate change in Scarry's world. There are no jobs that people do not like to do. Malice and greed is very limited, sickness never really frightening.
But still, the overall vision of goodness from the perspective of a child's innocence is valid and accurate. Adults at some point either just give up or mechanically hold on to dystopic beliefs because they feel it is part of their identity.
But it might just be a lack of imagination. Which is why hope and change always come from new generations, and the best elders can do is gently support them and step out of their way.