Equating advertising with education, even in jest, is dangerous.
Coca-Cola (and advertisements for it) is more widely available than basic education. I personally think this is unethical on part of the advertiser, doubly so when you're selling something that's both unhealthy and somewhat addicting. There are populations in the world who can't read, but can recognize the Coca-Cola logo.
Where I rent comes into play is what you intend for the indoctrinated to do with that education: buy coke, participate in the local ICBM program, or maintain society’s plumbing, the same plumbing the water and sugar in all that coke is pissed down. Either way it creates jobs.