Economies of scale aren’t automatic. They only apply to a certain size after which any benefits plateau.
Simultaneously you have demand and supply pressures especially if demand is increasing and supply cannot keep up, pressures due to limited transportation and shipping capacity which was a huge issue over the past couple of years across the board (and probably a bigger driver of inflation than nearly anything other than energy prices), and other costs increasing such as energy prices.
Simultaneously you have demand and supply pressures especially if demand is increasing and supply cannot keep up, pressures due to limited transportation and shipping capacity which was a huge issue over the past couple of years across the board (and probably a bigger driver of inflation than nearly anything other than energy prices), and other costs increasing such as energy prices.