That's the part that makes a system like this subjectively unfair.
If my daily commute is a handful of bus stops and that guy's is a train for an hour from another city, then I am basically funding his commute by overpaying for my pass... even if it's cheaper to ride my bus with a pass than to buy a ticket for every ride.
Edit - I read the website as saying that this is going to be the only pass available in Austria. It looks like it's not, which, of course, makes far more sense in comparison.