I think GG and 8chan are the least of 4chan's problems if they were trying to sell. Constant loli, gore, and racist threads would be a far bigger turn off to a potential buyer. GG and 8chan threads were just banned because of his personal beliefs.
Yeah, i'm not sure how you would monetize a place like 4chan. Most high paying ads would likely shun it like the plague, so as to not have their brands forever socially tainted.
pure speculation, but I'm pretty sure brands which are already socially tainted by the general public (e.g. adult entertainment) would gladly take up 4chan for ad space and visibility.
They tend to get similar advertisers to sites like the pirate bay. At one point, they had duckduckgo advertisements but I was so cynical that I assumed it was just crap like the rest of the ads... never clicked on it.
or the constant posting of child porn
Hasn't happened in a long time. I haven't seen CP on /b/ in probably 2-3 years. Granted, I'm not on it much these days, but it went from being something you'd see constantly to something you see rarely, if ever.
it's still in b regularly
Constant loli covers that I presume?
It's the legal loophole around CP at 4chan (luckily only at /b/). It's not clearly illegal so it doesn't get banned, but it's also obviously just drawn CP.
What's wrong with loli, gore and racism?
I get avatarfags and theri lolis, but gore and racism?
The site isn't worth much if advertisers don't want to be associated with the content.