I was looking around for a quote along these lines, but I think you've just expressed it quite well: "Removing the ability of the rich to do so won't magically give that ability to the poor."
It is quite easy to retard the success (or fill in the blank with legal defense, assets, education, IQ) of a group or individual. However bringing that success (or whatever) to another group is an entirely different sort of challenge, a very difficult one. There are rarely shortcuts and the most commonly suggested solutions often involve infringing on the rights of others. People don't realize this and in the quest of solving social problems with government intervention they end up creating even larger ones. Like you said, it results in pandering to the lowest common denominator. You see this very visibly with policies like "No Child Left Behind", but this sentiment tends to run rampant in leftist schools of thought.