Rich People to Save the World! Who Does it?

Which Rich Billionaire can improve the world?

Bruce Wayne

Tony Stark

Adrian Veidt

Goal: Each hero is placed in the modern world; they have a total of 3 years to improve the world. They have to have made the world a better place: Culturally, Advancement in Technology/Science, Political/Social, and Environmental. The one to meet the most requirements or have the greater effect on the world wins.

Rules:

1. Each hero has access their resources (company/money/technology).
2. Each hero will act according to their character (flaws/psychosis/morals)
3. No help from friends from comic book world, these are comic book characters placed in a real world
4. They will face hurdles occurring in the real world (natural disasters/warzones/terrorist/political parties/governmental conspiracies)
5. They are placed separately, kind of like different saves in a video game (No interactions with each other and their achievements and or failures will have no effect on one another.

Each are there most up to date versions: Batman (New 52) Ozymadias (Watchmen comics) Iron Man (616)

Explain how they improve the world, be detailed and thorough on how they do it. Also anyone can try to debunk anyone else's theories.

Red Son Lex Luthor beats them all

this is not a battle forum material

They all fail.

Veidt blows up half the world while claiming it was for the best.

This.