Everyone's missing something.
If the players are at all clever, they'll say, "Sure, we'll level that place! We'll even bring you their big sign (or whatever), covered in the blood of the employees and the ashes of the building!" Then the guy who owns the business moves it to a new building and changes the name. They torch the now abandoned building, hand the fixer the sign (or whatever), and say, "Gee that was a hard fight, but we pulled it off - where's our nuyen?"
Actually, if my GM handed me a scenario like that, I'd find it pretty fun.