That's a slightly odd way of looking at it. I'm guessing the people developing airplanes or whatever thought of a number of things including - hey this would be cool to do - and - maybe we can make some money - and - maybe this will help people travel - and - maybe it'll impress the girls - and probably some other things too. At least that's roughly how I've thought when I make stuff, never this will give a small group an advantage.

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.