I would say there's lots you don't know. Here's some excerpts from an article that may help you understand:
http://blog.pennlive.com/patriotnewssports/2010/10/bank_on_it_the_philadelphia_ph.html
the Phillies will carry a string of 123 regular-season home sellouts into the 2011 campaign.
Averaging 45,028 fans per game this season, the Phillies ranked second among the 30 Major League Baseball clubs, trailing only the New York Yankees.
Since moving from Veterans Stadium to Citizens Bank Park in 2004, the Phillies have been enveloped in a perfect storm of ticket sales success: Winning baseball + a superb venue + a passionate fan base = millions of fans visiting South Philly each summer.
Even though five new major league ballparks have been built since CBP opened, the Phils’ home still ranks near the top.
Matt Angle of BallparksofBaseball.com said Citizens Bank Park ranks as one of the best ballparks in the country.
“In my opinion, it’s one of the best ballparks in baseball,” said Matt Angle, who started the website BallparksofBaseball.com in 2000 and has visited 31 major league venues since 2004.
“Many great amenities, like Ashburn Alley, plus a good location and not a bad seat in the ballpark.”
While working at The Vet, with a seating capacity of more then 56,000, Weber remembers the team setting annual goals of drawing 2 million fans per season.
“When we moved, we wondered if we could get to 3 million,” Weber said. “We’ve averaged 3.2 million since moving here, and if you would have told me that eight years ago I would have laughed at you.”
As a long time Phillie's fan I'll let you in on a secret about "terrible" Philly fans. Even when the team was in last place playing in a lousy venue like the Vet they drew 25,000 per game. How many teams can boast that? Most .500 teams don't draw as many as the Phils did when they stank. Hell, I was in Seattle in 95 when they had a tremendous last season comeback to win their division and beat the Yanks in the playoffs. They didn't draw 15,000 per game but used that emotional season to get a new stadium they don't go to.
One reason there are misconceptions about the Phillie's financial resources is that for years under Bill Giles they spent like a small market team but are anything but that. Everyone thought they were poor but that was far from the truth. Another drawback for them trying to sign free agents (besides being cheap) was no one wanted to play at the Vet. Eagle's had the same problem. New stadiums for both teams helped turn that around, plus ownership willing to do what it took to be a success on and off the field.
BTW, the Eagle's have a nice little 86 game sellout streak of their own and a pretty long waiting list for season tickets. Say what you want about Philly fans but they support their teams like few cities do.