I don’t understand why that’s not a conflict of interest?
But honestly both products pale in comparison to OpenAI’s underlying models’ importance.
It's not the conflict of interest it would be if it was the board of a for profit corporation that was basically identical to the existing for-profit LLC but without the lyaers above it ending with the nonprofit that the board actually runs, because OpenAI is not a normal company, and making profit is not its purpose, so the CEO of a company that happens to have a product in the same space as the LLC is not in a fundamental conflict of interest (there may be some specific decisions it would make sense for him to recuse from for conflict reasons, but there is a difference between "may have a conflict regarding certain decisions" and "has a fundamental conflict incompatible with sitting on the board".)
Its not a conflict for a nonprofit that raises money with craft faires to have someone who runs a for-profit periodic craft faire in the same market on its board. It is a conflict for a for profit corporation whose business is running such a craft faire to do so, though.