Vacuum cleaner -> sell appliances -> sell electric motors

But there was a clear advantage in quality of life for a lot of people too.

Automobile -> part of industrialization of transport -> faster transport, faster world

Arguably also a big increase in quality of life but it didn't scale that well and has also reduced the quality of life. If all that money had gone into public transport then that would likely have been a lot better.

Airplanes -> yes, definitely, but they were also clearly seen as an advantage in war, in fact that was always a major driver behind inventions.

Steam engine -> the mother of all prime movers and the beginnings of the fossil fuel debacle (coal).

Definitely a quality of life change but also the cause of the bigger problems we are suffering from today.

The 'coffin corner' (one of my hobby horses) is a real danger, we have, as a society, achieved a certain velocity, if we slow down too much we will crash, if we speed up the plane will come apart. Managing these transitions is extremely delicate work and it does not look as though 'delicate' is in the vocabulary of a lot of people in the driving seats.

This is where the concept of trickle down economics came from though and we know that that’s not actually accurate

I used to hear about this with respect to how fun funding NASA would get us more inventions because they funded Velcro

No it’s simply that there was a positive temporary externality for some subset of groups but the primary long term benefit went to the controller of the capital

The people utilizing them were marginally involved because they were only given the options that capital produced for them