Hmmm I do not think it is only a question of money but I agree with bryant.coleman, why is it needed this VETO? We can't call it a democracy vote where 1 nation = 1 vote but if one (or more) of those 5 nations will express the VETO, it can block everything (

this is really insane).
May be we should give more importance to either GDP or the total population. Giving 1 vote each to Monaco (which is having a population of 30,000) and China (population of 1.3 billion) is not fair either. The US is able to get dozens of votes by default, from its minuscule vassal states such as Micronesia and Marshall Islands, which puts it in an advantage when compared to the others.