Yeah, it was a pretty clever if misleading marketing ploy IMO. I don't think many people ever realized that "Watson" as a singular thing does not exist and is basically just the brand name of IBMs ML consulting and cloud services.

I'm kind of surprised more companies didn't try follow suit, it would have been very easy to create the public impression that e.g. AlphaGo and AlphaFold were actually the same AI and available on GCP, or something like that. But I guess the deception breaks down faster when you're not hiring consultants.