" It's a total sham why waist/cross chest belts are not incorporated on a/c as in cars. Knowing that the vehicle industry has carried out more exhaustive tests on passenger survivability.I wonder why just waist restraints were opt for in a/c? "
As with most things, it comes down to cost.
Otherwise the bottom of the seat tray would contain an airbag. Or passengers would be wrapped in bubble pack on boarding.
