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In Europe they don't have Diet Coke, they have Coca Cola Light.  And it's not the same thing, it actually has some sugar in it, just not as much.  It tastes better than the artificially sweetened diet drinks here in the USA.

Instead of saying "no one buys Pepsi", which is an absolute, one could accurately just say "More folks buy Coke than Pepsi, given the option."

It's a matter of plain English and being accurate, if one is interested in validity.

In communication, precision is often useful over hyperbole and overgeneralizations.

What I said was statistically accurate.
No, 100% of all humans don't prefer Coke.  But you're being absurd to take that as my meaning.  As you often do.

A 12-inch pizza is only 2 inches 'smaller' than a 14-inch pizza, but it's far, far smaller area-wise. That's like the difference between Pepsi and Coke.  Pepsi makes x-millions of dollars.  Great.  It lags far behind Coke, for a reason.

Pepsi is a 2nd-rate plain soda.  Arguing against it is bizarre.  99% of the country prefers Coke.  I'll drink both.  Both are drinkable, but one is appreciably better, as per the evidence.

You're having trouble understanding that not literally 100% of all people prefer Coke, but that 99% of areas do? 
That's on you, friend. 

The population of the areas that prefer Pepsi make up under 1% of the population.  I can't believe I'm taking the time to type this out, but okay.  You and cincy require it.  Sure, people within the areas most people prefer Pepsi have people that prefer Coke, and yes, there are people in the entire rest of the country (99%+ of the overall population) that prefer Coke have some that prefer Pepsi.  But Coke is the preferred soda in areas that contain 99% of the population. 

Pepsi still exists because sometimes people buy it when it's the only option available.  Or if it's on sale.  Or if their taste buds are as wrecked as Badge's.  Your market share numbers include diet drinks and other flavored-sodas, which skew the data.  Pepsi's market share was 15% in 1985 and has halved since then.  It's virtually equal with Dr Pepper, Diet Coke, and Sprite. 
I can't find just Coke vs just Pepsi sales, but it's dramatically more radical than 20% vs 8%. 

Pepsi exists just for the sake of variety.  For the <1% who prefer it.  But the industry is so big, it makes tons of money.  Good on them. 
But swinging this absurd tangent all the way back around to the original point, college football should not aim to be Pepsi.  It should, to keep the drink thing going, aspire to stay different, a la a Sprite or Gatorade or whatever the fuck. 

Being the same product as the NFL, but a worse one, may make plenty of money.  But it sucks.  You can make as much money being related, but different, as college football has been leading up to today.