I know how advertising works when it comes to the basics, however when it comes to Coca-Cola and advertising, they won't lose profits if they don't advertise. This should be a known thing because think about them - they're literally known world wide and don't even need to advertise their drinks, they also own several companies that don't deal with soda. They literally have adverts everywhere and they don't pay for them.

If you walk into a store and walk around, you'll come across a Coca-Cola display and they're not paying for this, not to mention stores love those because they sell their Coke products easily. I'm not a "Reddit expert" I'm someone who's literally looked into advertising, how much it costs, where you can do it, etc. That's because I was applying for a job that was essentially advertising for a nuts company. If you honestly think Coke, a brand known world wide, will not make a profit if they don't pay for advertising then you may wanna just look up the basics on advertising as it is a very interesting read. You'll learn a thing or two or you might not, but you'll see that large corporations aren't always paying for advertising every year because they get enough free advertising from other companies, media, etc.

For example, a small business in the area didn't pay for any advertising and left it to the customers to advertise for them, it worked out a lot better than when they were paying for advertising. Advertising doesn't always benefit a company and can put them in the negative. Again, I'm not an expert this is all the basics of advertising and my own first hand experiences when I actually did advertising for companies.