You can't produce an exact amount of food. It isn't an assembly line, it's farming, it's biological.

You need to aim for excess, to ensure enough is produced during drought, animal sickness, and other variability.

What Canada does is ensure there is excess, but not crazy amounts. It also ensures the market price is fair to farmers.

What you call "high food price" we call "farmers not going bankrupt".

And while nothing is perfect, supply management is far better than the alternatives.

>Canada dumps good milk down the drain while people go hungry and suffer high food prices

I'm not sure if you realise this, but the exact same thing happens in the US.