But do you think that once that has leveled out a bit, the bandwidth/market bottleneck you referenced will be identified as the new bottleneck[0]? Like, new businesses will launch, or existing companies will identify new growth areas that they did not have the capacity to move into.
I don't know how to respond to your second paragraph. Looking in that direction is a bit too overwhelming.
[0] I think this was always the problem, not developer productivity
If the extra one or two employees are 2x or 3x as productive as they used to be, why would they not be employed? There will be plenty of market to grow into since the gains in productivity are shared throughout the economy.