Another thing that connects countries like Russia, Brazil, USA and Mexico, beyond their dimensions is this - their populations move at different speeds. I’m certain this is relevant.
Each has a minority that use aeroplanes regularly, yet they also have a larger group who have either never been on one or don’t possess a passport.
The phenomenon might be a little less pronounced in the US, but certainly Mexico, Russia and Brazil contain demographics with a near medieval level of mobility.
If most modern nation states are CD players, these countries are more like old-style record players with variable speeds.