The Steelers are going to the Super Bowl. Pittsburgh isn't going anywhere.
First, let's get past the terminology. Using Pittsburgh to refer to the Steelers is an example of the lesser type of synecdoche, where the whole of something is used to refer to a part of it. You might go further and suggest that using Pittsburgh to refer to the Steelers is a metonymy, but let us not mince words.
Second, let's be clear on where Pittsburgh is going.
The city is in receivership.
Toledo (aka Frog City) has a bigger population.
Buffalo has a busier airport.
Pittsburgh's air is ranked among the nation's worst.
The Steelers are a business. An entertainment business. Just like the Civic Light Opera or the Pittsburgh Ballet Theater. It's a stage, not a field. (edit)


...Already long ago, from when we sold our vote to no man, the People have abdicated our duties; for the People who once upon a time handed out military command, high civil office, legions — everything, now restrains itself and anxiously hopes for just two things: bread and circuses.(Juvenal, Satire 10.77–81) (credit)

Pittsburgh's population is half that of 1950.
Young people continue to leave to find work.
Pittsburgh has no semi-unique economic niche.
Downtown is abandoned and shut down at night.

The short list above consists of the local items.
We are losing young Americans each day in war.
The financial sector is tanking.
Our automotive and other manufacturing businesses are failing.
We hand Senate seats out as perks of celebrity or family.
Businesses abandon commitments in bankruptcy and expect public subsidy.
We're about to
Don't pay attention to all that boring stuff.
Sing along: Here we go Steelers, Here we go!