[zanny]

Except if its just a price shock than the increased profitability of apples will attract investment in apple farming to produce more apples because of unmet demand and fair market conditions. The price would go up, the profitability margin would be exploited by increased competitive production up to near break even costs, and prices would fall back to where they are today just with way more apples being grown.

In practice in pretty much every industry in the US incumbents put up regulatory barriers behind themselves to prevent competition from emerging.