Has Davos made the world better?

No, because nobody had the courage to attack in terms of business, U.S.A. Therefore, the same problems will just go in circles like a dog chasing it's own tail.

Has Davos made the world better?

Lets see...

His foundation, which hosts many of the world's most powerful, famous and wealthy people at its annual meeting in the Swiss ski resort of Davos, has clearly made an impact.

but

World's 26 richest people own same as poorest half of humanity: Oxfam

https://japantoday.com/category/world/world's-26-richest-own-same-as-poorest-half-of-humanity-oxfam

So to respond to the original question: A big fat NOOOOO