I am sure the investigation will come to the conclusion that the supermarkets decided, collectively, not to engage in a price war. As the media was talking about high prices, people would likely blame other people for the price hikes. Same reason some supermarkets are accused of profiteering on some products in store - because people have come to accept genuine price rises, so why not slip in a bit more?
I did wonder if the news might trigger some into sudden price cuts, but that might then be too obvious.
I did wonder if the news might trigger some into sudden price cuts, but that might then be too obvious.