Mobile Dev Memo's @eric_seufert says the biggest challenge facing OpenAI's ad business is conversion optimization. "You start to see the growth inflect when they integrate true conversion optimization. That means you're bidding a specific amount for a specific outcome." "Once you are bidding against a specific outcome, then the growth inflects and I think they'll be off to the races. That's the gap from 1 to 10." "The gap from 10 to 100 is just continuing to onboard every SMB possible."