[yummyfajitas]

If this person's parents had more than the median income, they almost certainly paid enough in taxes to cover their child's education. They probably also paid for his/her health care.

The value provided by the government is merely the sum of all taxes paid - overhead/waste/corruption. Some people (the rich) get less back than they put in, some (the poor) get back more than they put in. So anyone who is sufficiently rich (1) has probably already repaid any debt they owed to society, and can legitimately secede.

(1) I ignore for the moment people who got rich from rent seeking, e.g. defense contractors, trial lawyers or members of public sector unions.