By they, you mean collectively? In the US the government annually diverts more than 25% of GDP, which is about 650 times what the largest private company divert

By they, you mean collectively? In the US the government annually diverts more than 25% of GDP, which is about 650 times what the largest private company diverts annually as profit and 100 times more than what that company has on it's balance sheet. So if we want to find the single entity that "own[s] the biggest capital and resources to be able to tackle the problem", it's the government. I think it might be more effective if we, being in a democracy, would tell the government to change its priorities for all that resource. But then that would mean it's our fault which means we wouldn't be able to point fingers at others.