You do know that a huge chunk of teams season tickets are now bought by businesses that sell them for profit on the secondary market. This is why you can get tickets to any sporting event online. So is it shocking that a team like the Cowboys with so many fans all over the country would have that many fans at an opposing team's games? The days of season tickets all being bought up in the local area are LONG GONE. Corporate America owns sporting events tickets, especially when those tickets come with a 20k or more PSL fee.
Why would I ever buy season tickets and pay that psl fee when I can go on anyone of half a dozen online ticket broker sits and buy tickets with no psl fee for any game I want to go to, home or away?