thanks for highlighting the criticism. So looking at the porsche example, so it would be very difficult to classify a product in a market using the bcg matrix.
IT IS ASSUMED THAT THE CAPITAL AT THE START OF THE YEAR IS THE ONE THAT WAS USED TO GENERATE THE PROFITS AT THE END OF THE YEAR .THEREFORE THATS THE REASON WHY WE USE CE AT THE BEGINNING OF THE YEAR AND NOT END OF YEAR .