The Milk Marketing Board was abolished because it fell foul of the EU rule against monopolies.
But the MMB protected dairy farmers against the supermarkets.
So a law against monopoly ends up giving all power to an ologopoly - the half dozen supermarkets.
Have you ever wondered about the cash flow in a supermarket - yoiu pay cash at the till and the supplier gets paid 90 or 120 days later... they build their new buildings on the "float" that they withhold from their suppliers.