Without a doubt, yes.

Check out these links for an idea of team valuation for each of the main sports leagues (not including hockey or soccer):

Forbes: NFL Team Valuation
Forbes: The NBA's Most Valuable Teams
Forbes: The Business of Baseball

While a few of the richest baseball teams eskew my comparison, on the whole, football is a much bigger draw in America. It's amazing when you remember that a baseball team plays 162 regular-season games, and a basketball team plays 82 regular-season games, whereas a football team only plays 16.

Tickets are not phenominally more expensive at football games, nor are the concessions. People are just more passionate about football than the other popular sports.