Comment It could be worth it (Score 1) 3
If they don't manage to create strong AI, but manage to create a better search engine that somehow replaces Google, then it will be worth the investment (for comparison, Google profit is on the order of $100 billion per year).
There are a lot of other potential products that could bring heavy revenue, even without strong AI. AirBnB has $2billion a year in net profit, which isn't great but it's conceivable that even with the current crappy AI product, OpenAI could make a reasonable amount of revenue. With billions of potential customers, they don't need to make a lot of money off each person.