Its funny how many out-of-towners say that if they lived in Denver they'd get season tickets in hot minute, but then they don't realize how expensive it is when you add in parking concessions etc. Its not very realistic to get season tickets, its just too expensive. There are very few people that have season tickets to any of the major sports teams in any town. Its usually the corporations and the wealthy. I'm not poor but I couldn't afford season tickets if my life depended on it, thats why I go to about 8 games every year about 1/5 of the home games. Sure I'd love to go to more, but I can live with only going to about 8 and not blowing my budget. It doesn't mean I don't watch every game, and it doesn't make me any less a fan, its just realistically what I can afford to do.
The reason the Avs are struggling with attendance isn't due to lack of season ticket holders its due to high competition for peoples money. When the Nuggets are good, the Broncos are good and the Rockies are tolerable but have one of the best fan experiences in professional sports its going to hard for a poor Avs team to wrestle money away from the other teams. Once the Avs put a competitive product out on the ice the casual fans will start to come back. They might go to a few less Nuggets games and Rockies games and add a few Avs games in. Thats just how it works, good team=lots of fans, poor team=less fans. Every team goes through it, Avs used to sell out every game and the Nuggets were terrible and got nobody to come to games. When the Avs get better the casual fan will be back in the seats and the Avs will sell out the stadium again.