"Unless there's some bread cartel/oligopoly, a bread seller can't just increase prices" They can. Where else are you going to go? Due to lockdown the excess su

"Unless there's some bread cartel/oligopoly, a bread seller can't just increase prices" They can. Where else are you going to go? Due to lockdown the excess supply capacity that allows everybody in aggregate to leave supplier A and go to supplier B isn't there. Supplier B can't supply everybody and people don't want to or can't go without. Therefore Supplier A will sell their output at whatever price they decide. For competition to work the turnover curve on the price/sales volume graph has to be leptokurtic. It isn't at present. Price can be pushed way up before volume is affected.