There’s a lot of improvements that have come about as a result of being technically feasible, in many cases over the objections of the workers.
E.g. safer working at heights - harnesses, scissor/boom lifts, scaffolding with kick guards and netting.
In other cases, both the workers and employers wanted improvements. Compare the nose end of a modern truck or freight locomotive with a WW2 era or even 1980s one, for example.










Yes, but…
The distribution limits are almost always an afternoon/evening thing. Early afternoon for warm climates (aircon and cooking dinner) and evening for cold climates (cooking dinner, showers, heating).
Midday for solar injection.
Hence the famous ‘duck curve’.
The distribution network has plenty of capacity overnight; we just need people to wait until about 11PM before we start charging.
At that point we get the question of whether we have the generation.