I think there are alot of reasons that factor into why this is happening.
2. Prices of Tickets. I know there are tons of tickets on Ebay, StubHub, etc. But the original sales of tickets from Ticketmaster, is where the casual fan is going to start. Sorry, maybe some of you can afford $54 bucks for a seat half way up Club 200 for every home playoff game, but I can't. I got a damn good deal on my HD TV that I spent my entire tax return on and I'm going to get a of a lot of good use out of it. I can see the action way better on my TV than I ever could at the ATT, and having friends over is just as good as any playoff experience in an arena (sans The Finals).
4. Prices of The Game Experience. Let's say we spend that $54 per ticket. That's about $120 with taxes and "convenience" charges for two people. Cheapest parking is $8 (I'm not sure if that's still right, I haven't been to a game since last season.) Then if you want a soda or beer that's what like $6 to $7 (so $14 for two people, and that's just one beverage). God forbid you want to eat at the game (easily $25 for two people). And these silly vendors don't even take credit/debit cards for pete's sake! You could easily spend $150-$175 for ONE game. That's ing insane!
I love the Spurs to death but if they want to put the blame entirely on the Spurs being "spoiled" or "lazy" or whatever that's there prerogative. I just think they just take these factors into consideration before they go throwing all this blame on us.