So now that this previously 3rd party feature is fully integrated into ChatGPT, that effectively kills any separate app trying to do the same thing.
The fact is, building a whole company that is basically a wrapper around ChatGPT never had any moat to begin with, and I'm not at all surprised that OpenAI would see what cool things people are building on top of ChatGPT and decide to offer that functionality themselves. It's predatory for sure, similar to what Apple has done over time by copying iOS features enabled by jailbreaking, but not surprising in the least.