It was fascinating to witness the hard fall of Google vs the seamless integration of ChatBOTgpt with Bing. I am certain that each company chose to showcase the best play on its data set - these are the Walled Gardens of Information - this is why dominant players are who the dominant players are, that is their bias.
Each of these entities holds a data set of behaviours that is unique to their ecosystem; it collects data that is fashioned in a unique to them way, which by the way quality of, is outside of regulators purview.