> If I’m another potato farmer and all of a sudden all those extra potatoes are teleported somewhere else, I will in all likelihood raise my prices.
There seem to be two different scenarios being conflated here.
You describe producers acting in response to the risk of future price changes.
It seems to me that others in the thread are describing a scenario where product is discarded because the price has already fallen so far that it is no longer profitable after accounting for various processing costs (ie things such as packaging and transportation).
In the latter scenario, if someone were to foot the bill for the redistribution itself there should be no direct effect on that specific part of the market. This assumes of course that the producers aren't compensated for the redistributed good (so it isn't significantly different than simply disposing of it). It also assumes that people don't resell or otherwise barter the product they receive (it's food and they're presumably starving so that assumption seems fairly reasonable in this case). (And of course there are bound to be countless indirect effects on the market as a whole.)