Just about everybody who, in the past few seasons, has been to a Wizards game at the Verizon Center, seen a Wizards home game on television, or even read much about the Wizards is aware that there is often little-to-no home advantage to be had for the home team in Washington. The big exception to this, of course, is during the fourth quarter when an opposing player is at the free-throw line and free chicken sandwiches from Chick-fil-A are on the line.
Plenty of other franchises from every sport have attendance problems and fanbase problems(1), and the reasons vary from organization to organization and city to city.