Of course they'd want to leave the door open to building their own products, in order to continue to be able to present those widgets and have exclusive access to the resulting data.
Just because ChatGPT+Plugins isn't going to be the center of people's lives (did anyone truly think it would?) doesn't mean that when they have another product idea that they have unique insight into, they won't want to bring it to the world directly.
This is the usual "Netflix attempting to become HBO faster than HBO can become Netflix" and a critical eye to where the work is being done and the value being delivered.
(disclosure: paying OpenAI customer, no other relation)
“Your honor, the defendant said some things in an interview that they don’t agree with anymore and I want to sue!”
“Sue for what?”
“Sue to make them believe the thing they said!!!”
Lol.
…just not anything that would survive a motion to dismiss.
Edit: Or I guess as you said in a reply to a sibling comment, you might only count it as "open to legal action" if you have a decent chance of losing.
I bet this isn't true and he wasn't supposed to say it.