Most companies don't have an unified platform they can build this on. And even if they seem to have superficially, the internal organisation is so splintered that it'll never happen.
Like what's going on inside Google, it's getting stupidly political and infighty. If someone tries to build a comprehensive LLM that touches on gmail, youtube, docs, sheets etc, it's going to be an uphill battle.
And even if they did, there'd be five competing efforts, two would be good or at least decent, four would be deployed (not the best one though), and all would be replaced in three years.
None of them would work on-device, all would leak your data into the training set.
They did do that. Back in 2013-2015 or so. It was called Google Now, and it was a bit like magic.
It showed you contextual cards based on your upcoming trips/appointments/traveling patterns. E.g. Any tube delays on your way home from work. How early you should leave to catch your flight.
This alongside Google Inbox was among the best and most "futuristic" products.
I was glad to see today Apple implementing something similar to both of these.
Canceling Google Inbox was when I started to move off their platform, it was their best product in years and finally got a handle on email chaos, and then they just killed it with no follow up, insane.
Nothing compared to the fighting between whether the Office team or the Platform team at Microsoft owned the AI 'client' work, if we were back in the Windows 7 days.
This is the norm, not the exception for big companies.
The more I spend time in mid-large companies, the more I'm amazed that that Apple somehow managed to avoid releasing three different messaging apps that do the same thing.
Like what's going on inside Google, it's getting stupidly political and infighty. If someone tries to build a comprehensive LLM that touches on gmail, youtube, docs, sheets etc, it's going to be an uphill battle.