I understand that it makes a football slightly easier to handle.

But, why would it make any sense at all for one team to risk getting caught underinflating footballs since both teams would gain an equal advantage from it because they’re playing with the same ball?

There really isn’t any way to prevent the other team from getting the same advantage is there? Plays get intercepted and overturned all the time, right?

Also, does anyone know why so many balls are needed for a single game? What would typically cause the necessity to switch to a new ball?