You proposed a solution to the problem of corruption, and I'm trying to provide a more realistic one. I agree with that "if you are rich it is stupid to not use your wealth". But the thing is that many politicians are not rich(yet). They go into politics in hopes of becoming rich(mostly through bribes). And they will not stop taking bribes ever with that state of mind. It will never be enough money for them. That's why I think it's important to know the limit after which more money will not make you happier.
Yes, it started to be little OT. But i don't agree with your solution either - I don't think that it wll help to teach people that from some point wealth starts to be disgusting. You just draw a line (where?) and tell that everything above is disgusting (why?). Well, it doesn't have much sense at all - first question of every child will be - why?