Farmers should have known it was a scam when the board wasn’t broken up, just privatized.

That part was definitely strange. When Ontario gave up its single desk the Ontario Wheat Board (now Grain Farmers of Ontario) stayed the course, just without the single desk requirement. The pool is still active if one chooses to join.

The CWB didn't even need to be broken up. It could have continued as normal, except without the single desk requirement.

keep aging like milk

Milk may not be the best analogy. Harper and gang was keen to keep its protectionist measures in place. If you recall, Bernier left the party because he wanted to do away with milk's protectionist system and couldn't get any support from within the CPC, thus creating his own party. Which too never gained any traction with regards to milk, which lead him to give up on that idea and go down some crazy paths to try and find something that would stick.