Megabrands?

 Brands are on their own. 

Do St. Louis peops root for LA? I doubt it. Maybe some transient black Israelites do. They always have.

If the Bengals vacated Cincinnati and moved to Louisville, well ...  a lot of big Bengal fans might, and proximity helps. But Bengal nation would barely grow.

Let me guess.

Off the top of my noggin: 

Raiders

                                        

Los Angeles. Oakland. Las Vegas. San Antonio surely would've taken them. I feel even though Texas is far from the original spot, Raider nation is a brand that stays stuck to the dude 

 Portland wishes

...they didn't puff tran knee pipe.

Cowtoys?

Lakers? 

Yankees. 

That’s it right?  Were it not for the economic reality of moving for better job pay and opportunity I would take shot at all the ppl from NY or LA that move far for good job.