Aircraft....Just to show that you have no idea what your talking about and that your logic is so deeply flawed that you fail to impress ......look at your own words.
The fundamental reason for the decline in T&Cs, of course, is that everything in aviation has had to become steadily cheaper to facilitate the ever cheaper air travel for the people of the world - cheaper aircraft, engines, maintenance, management - and cheaper pilots.
Cheaper Aircraft...........WRONG....Show us which aircraft are cheaper!
Cheaper Engines...........WRONG....Show us which new engines are cheaper!
Cheaper Management....WRONG and in fact the complete opposite.
Cheaper Maintenance.....WRONG but only because of short sighted management and their bonus driven mentality.
Cheaper Pilots...............WRONG.....because once again management do not want anyone else to be paid for what they do...unless of course your job is in management.