That doesn’t seem beneficial to workers as a whole. I thought innovation was supposed to benefit everyone? Where’s the hole in this logic?
By 2030 this is expected to be about 2, which is better than I expected. You would need massive productivity gains inside the span of the past 40 years to make up 4-6 workers per retiree in labor.
The fact I have 4-6 less cousins my age to sell my labor to to help take care of grandma doesn't seem to offset that huge amount of labor now needed to be expended on largely unproductive tasks. We went from 4-6 people pitching in to help out grandma each day to just myself. If you look at that in hours vs. dollars, the problem starts to become quite apparent to me. I don't feel I'm 500% more efficient at what I do than my elders.
Perhaps we've innovated so well that we can now support old folks with a fraction of the labor, but I'm skeptical. Fixed costs seem rather fixed, and from where I'm sitting I think a whole lot of that "innovation budget" has been spent already on rising expectations of minimum quality of living.
How do you save labor for later? Current retirees need young folks to do the work they cannot do, and thus those young folks are paying in today.
When those young folks retire they will be relying on even younger folks to do the work for them. If there are not enough younger folks to do that work, the money saved between generations will become relatively worthless.
Thought another way: The same amount of labor needs doing. If the current generation of workers stops paying in (read: working), then the entire system stops. One generation saving more (or being larger) than the next doesn't change much other than that saved wealth chases a decreasing amount of available labor once that generation retires. Quality of living will be predicated on the amount of available labor - not saved capital.
It gets a little more wishy washy when you can plow capital into long-lasting infrastructure, international wage arbitrage, etc. but in the end you simply cannot run retirement systems if you have less labor available while keeping the same quality of life for all parties. Someone is going to lose.