I think things that make retailers get greater profit because they can sell directly to the last consumer, this makes them able to raise higher prices than wholesalers, of course this is an effective market strategy for getting big profits.
They can inflate the price and just used the unfortunate incident like covid or any crisis happening in the world so that they can increase the price of the product which is necessary needed at that time. This is totally bad to the economy since this one really affect everyone since this will initiate for the price of other product to rise up to.
Government need to step up on this since they are the one who can control the price of each basic necessities and if they cannot stop those greedy businessman then maybe this will be one of the reason the inflation rate rise up.