You're right. My guess is that on average a 40yo needs 2x the pay and brings 1.5x the value. So it's maybe not so drastic and there are benefits of hiring older

You're right. My guess is that on average a 40yo needs 2x the pay and brings 1.5x the value. So it's maybe not so drastic and there are benefits of hiring older developers (stay around longer, more reliable, etc).