>>86276097Actual non-conspiratorial, non-meme answer?
Because the world is too big and complex for a one-size fits all solution. People in different regions have different needs and priorities which means the only way a OWG could work is with a federalist system. Which if that's the case, it's basically the world we already have now but all the countries have to report back to I don't know, the UN or something for higher levels of legislation. But it would also be an incredibly inefficient and slow system because you try responding to the needs of EVERYONE IN THE WORLD SIMULTANEOUSLY.
The world is unironically just too big with too many people for such a system to work.