The word on the ether is that there is a bit of an oversupply of mushrooms on the market at the moment.
Some might call it a glut. There is talk reportedly emanating from marketers and P.O.’s that growers need to be slimming back on production a shade.
Figures of 10-20 % reductions have been mooted, for the short term to ease off the supply into the marketplace.
This would help firm up prices and hence margins for all involved.
The metrics involved in market optimization are always very dicey, for in the end it is the behaviour of consumers, which is not always rational, which dictate demand and supply.
Getting things just right is always only achievable in fairy tales.