No telling that I've ever heard starts with three little pigs having wealth disparity and only one being able to afford bricks due to generational wealth.

The implication of the story is that they are all equal and one works harder than the others. Which is a real life lesson. Regardless of your views on systemic wealth allocation, at any socio-economic class, hard work is still a virtue.

I feel like you're seeing the lesson you want to see.

I don't think it matters so much what the original authorial intent was, more how the story has been transmitted in pop culture.

See also: the words of Jesus vs how America has transmuted them in pop culture.

That's fair.