All of what you're saying is happening right now. Companies are using college SAs on the national level (Dr Pepper Heisman House used Caleb Williams), local businesses are using athletes to get their business out (just run through any college town...our own RB Jamie Felix is doing a campaign for a car dealership). You also have to understand that players aren't going to take every deal available (conflict of interest with another company, or they don't want to represent a product). That means opportunities for others.
My point is businesses support players that have name recognition. When Lethal Weapon 3 was going on, the Thriller Dome was packed every night and it wouldn't be surprising to see celebrities and business executives filling the seats. That team had highlights on repeat on ESPN beating some of the best teams in the country. If social media was a thing back then, you don't think businesses would want Kenny Anderson or Dennis Scott splashing their products on their social media?
The point of being in Atlanta is access. As
@Connell62 points out, Stoudamire (and our players) has the ability to access businesses and a "who's who" other coaches and players don't. Stoudamire can literally go to breakfast with a prospective NIL business in the morning, go to practice in the afternoon, and meet with another prospective NIL opportunity in the evening over drinks. It's why people move to Hollywood/NY for the TV and movie business. You can apply the same thing to our SAs. There's a distinct advantage to being located in a big city that you don't have in places like Athens/Tuscaloosa/Tallahassee/etc.
It all comes down to success. If GT doesn't have the success, this conversation is moot. If we do have success, GT's situation is uniquely set up for NIL opportunities. Just look at Southern Cal and how they leverage NIL being in the LA market. Caleb Williams has deal unique to the LA Market, a deal with a LA based Real Estate private equity group. That doesn't happen if he's in Tuscaloosa. Malachi Nelson, who was a freshmen and doesn't have the name recognition of Williams, signed a NIL deal with an LA based hospitality group. That doesn't happen if he's in Ann Arbor. Why didn't that group reach out to Michigan's JJ McCarthy to do a deal when he's a bigger name playing for one of the top teams in the country. Because of access.
If GT can win like the Cremins years, businesses will want to be part of it because they know they can leverage a player's social media to give them more exposure.