On the profitability point. Yes and no I guess. ChatGPT will likely go down as the most influential thing in the ai race (or early ai race) simply because it was the most visceral illustration of the art of the possible to the general public.
Technical people will correct me or have arguments to why this isn't the case but they'll be wrong simply because ChatGPT captured consumer attention, which ultimately led to supercharged financial attention, and everything that has happened since is due to that. Whether its pure marketing or futuregazing, the world of money bought into it, with the ultimate view that this is the worst it will ever be.
The ultimate profitable goal is unarguably replacing human labour (at a lesser all in cost) but if that is not possible, but you believe it could be possible, then showcasing and getting people to believe that you can achieve that goal, is pretty damn profitable too and it's proven to be for some people while giving them runway to continue to pursue the ultimate goal.