The "easiest" fix to this issue would be fixing education. If it's generally easy/inexpensive to get a good education for every citizen (e.g. via a taxation based social contract) that particular incentive goes away. Different societies have different positions on this. I'm generally very much in the "less government please" camp but for certain areas where there's a potential for multiplier effects or where more equality of opportunity is very likely to have a positive effect on society as a whole (education, health, justice, possibly defense etc.) I don't mind tax-based measures to provide more equality.