They're commoditizing the ability to generate viral content, which is the carrot that keeps peoples' eyeballs on the hedonic treadmill. More eyeball-time = more ad placements = more money.
On the advertiser side, they're commoditizing the ability for companies to write more persuasively-targeted ads. Higher click-through rates = more money.
[edit]: For models that generate code instead of content (TFA), it's obviously a different story. I don't have a good grip on that story, beyond "they're using their otherwise-idle GPU farms to buy goodwill and innovate on training methods".
On the advertiser side, they're commoditizing the ability for companies to write more persuasively-targeted ads. Higher click-through rates = more money.
[edit]: For models that generate code instead of content (TFA), it's obviously a different story. I don't have a good grip on that story, beyond "they're using their otherwise-idle GPU farms to buy goodwill and innovate on training methods".