What if the perfect liquidity event for Silicon Valley was not a blockbuster IPO, or an acquisition that paid out at some insane multiple, but a literal exit from the United States of America? No more lumbering bureaucracies, no lobbying incumbents, no "petty" laws, no obstructionist unions. That's what a Stanford lecturer and genetics startup cofounder Balaji Srinivasan proposed at Y Combinator's annual startup school this weekend.