The cat is out of the bag. Some people might volunteer to slow down. But others inevitably won't. And that creates this sense of FOMO with everyone. I think the reason OpenAI is choosing to operate in the open has been exactly this. This way they get to control the narrative, act as a first mover in the market, and ensure it is done right (by their notion of this). Of course others are working on the same topics and research in this area is progressing rapidly.
In a way the worst possible outcome is that some less benevolent parties than OpenAI start taking the lead here. These parties are already active. They are just less vocal and open about the whole thing. People can stick their heads in the sand of course but that won't stop e.g. the Chinese from moving full steam ahead on their agenda.
I'd prefer for them to not be the first or only ones to achieve AGIs. And the race for that is very much right now.