Despite what people often write and believe here, the access controls on PII data at Google are incredibly strict. You can't just arbitrarily train on people's personal data. I know, because when I was there, working on search backend data mining, in order to get access to anonymized search and web logs, I had to sign paperwork that essentially said I'd be taken to the cleaners if I abused the access.
> What gives, Google? Get on it
It's a very difficult decision to intentionally destabilize the space you are the leader in, for all the reasons you can imagine. In a sense, Google needed someone else with nothing to lose to shake up the space. How they execute in the new reality is yet to be seen. The biggest challenge they may have right now isn't technological, but that "ChatGPT" has become a sort of brand, like Kleenex and well, Google.