It is repeated often, but is this really true?
Number 1 trait of a politician should be honesty and integrity in my opinion - and I don't think that you can increase that factor, just with throwing more money on them. Then you maybe just get more smart people, who are in it for the money and use their smarts and cunning to extract even more money. I think politicians should want that job, because they primarily feel the call to achieve something bigger.
So a adequate payrise is alright in my opinion, but I don't want the top managers who run a big compony for profit to also run states. As states are (or should not be) profit orientated, but to serve the greater good of its people.