How do you figure? The government will need to make sure kids get marijuana, because they'll be making billions of dollars from it. Face it, ten years after legalization, people won't even know what the word, "libertarian," means. The government will expand tenfold and control every aspect of our lives. George Soros has been promoting marijuana because he explicitly know that.
Governments (federal, state and local) make billions from alcohol taxes, and I don't see any push to put Jack Daniels in school lunches.