There are also different standards when you care about the environment. Old school fridges used incredibly bad greenhouse gasses (R22 and R142B) and were significantly less efficient using approximately $250 MORE energy per year than a modern fridge (1750 kWh vs 450kwh) so only factoring in your electricity bill you could buy a $2500 fridge every 10 years and break even and if you got a cheaper fridge like a whirlpool you could get a new one every 5 years for 50 years

Don’t get me wrong there is still planned obsolescence but a lot of the older designs aren’t as perfect as people like to remember them being