Google also own the ad space in a way that's unsurpassed, and that's the most direct route from where they are with their AI product and profitability.
Tangentially, it's sad to see AI become yet another attention factory. Sora 2 is OAI trying to get the jump on this, but I think it's quite likely that they'll get clobbered by Google and Meta when those companies start juicing their users attention in the same way - they have the ad buyers and the infrastructure for that business already, it's literally how they've made money this whole time.