I find it amazing that people can't be patient and wait a few minutes to get off the aircraft!
You've got 90 minutes in your schedule to make your connection. You are running an hour late on arrival. How many minutes make 'a few'?
Or: you know just how long the immigration queue is going to be. If you're at the back, that's another half hour standing around after twelve in the air. If you're at the front, you'll be at your hotel sipping that reviving martini before the last person's managed to make it off the plane...
Time spent hanging around the gate is dead time, for pax and the airline. Reducing it, even by a little, will save tons of money and wasted life over the number of flights and passengers it benefits.
R