You are actually wrong here.
BTW I support their take over - cautiously and mainly because we have no other choices
It is worth noting that there are a BIT of extenuating circumstances when it comes to his tenure with the Marlins.
The previous owner Wayne Huizenga won a Championship with the team in 1997 and then proceeded to asset strip the team the next year, selling all the good players. The team finished the next year 54–108, the only team in MLB history to ever win a championship and then lose over 100 games. Henry then purchase out Huizenga and began trying to rebuild the team and get them into a new stadium.
Now Miami and Florida are two really really really difficult places to get anything done, much less get people to watch Baseball. The attendance there is always some of the lowest in the nation. Henry had difficulty getting full backing for all the ventures and getting a stadium built.
After two years of Henry's ownership the Marlins climbed out of the basement and finished third in their division, but the stadium had issues getting built because of provisions in the public financing which called for cruise ship taxes. Jeb Bush (Georgies brother) Govenor of Florida came out against the issues and the public didn't go one way or the other. Henry sold the Marlins in 2001 and took over the Red Sox. In 2003 the Marlins won another Championship.
Now one would assume that if Henry was the problem with the stadium being built, that it would be going, but NO the stadium STILL hasn't been completed. There are multiple law suits involved now and things are getting sticky.
read more here: http://en.wikipedia.org/wiki/Miami_Ballpark
Some of the information really shows the issues with the city. After the Marlins won the World Series in 2003, both team management and Miami-Dade County officials announced plans to fund a new ballpark. Soon after, the city decided not to help the team pay for a new stadium. However, in January 2004, the City of Miami proposed building a baseball-only stadium for the Marlins at the site of the Miami Orange Bowl that would adjoin the existing football stadium along its northern flank.