It has an impact in the sense that its a very user friendly way to consult search algorithms.
They do have a role in enhancing productivity especially among poorly optimized tasks and/or less tech literate people, but the reason it is not considered a game changer is that anyone can replicate the simple technology behind it, as long as they have access to internet. If something can be had by everyone, it doesn't provide a significant advantage to anyone.
In fact you already have several Openai comparable clones in China, with some having better and worse levels of different parameters. This is because it is fundamentally a cheap and easy technology.
