When you can fly e.g. London to Barcelona for something like $59 (if you time your ticket purchase right), it is a bus, for the price of a long-range bus ticket.

(There is even a big aircraft company named "Air Bus", or something, did you hear about them?)

Of course it's a bus, what do you expect? If you want it to be like the 1950s golden age, you can get that, but for a price.