My solution for this is to rate-limit political contributions --- they may only be made in an amount equal to what a minimum-wage worker might reasonably be expected to donate from a week's wages (say 10% of hourly min. wage * 40), as a physically written out check or money order physically signed by hand (at least an "X" mark) and mailed in a first-class envelope with at least a similarly signed cover letter explaining the reason for the donation.
If this causes the extinction of the political lobbyist, I'm fine with that.
Private money in politics is one of the counterbalances to the emergence of a totalitarian state. The government gains a huge advantage over the opposition due to the fact that it is the government and receives free media coverage.
I think this is an inherent human problem that prevents us from overcoming it... history has proven that the more equal everyone is, and the less individual ownership they have, the lazier and more bored they get.
Look at the previous attempts at socialism... people stop caring when there's no goal to work towards, they can't all be doing the same thing and just be happy, because humans are naturally competitive. We desire things other people don't have, like possessions, money, or power.
People don't become "lazy". They're lazy from the beginning. Laziness is something they overcome for personal gain. And if the system promises fewer personal gains for overcoming laziness, then why bother?