This downward trajectory doesn’t feel especially surprising to me. Sony have been openly telling people this console is on its way out; which is wild, considering it’s only been practical to get one in the past 18 months without scalping.
I have one – the hardware rocks! It certainly doesn’t feel end of life to me.
You know what might help convince people to keep buying games consoles though? Investing in new games and IP, rather than doing the exact opposite of that and laying off your development staff.