A classic joke: "Google's mission is to organize the world's information and make it universally accessible and useful… unless it's in Google Drive."
But this hits at something very real.
Google, and other hyper-silos, don't have an incentive to create much value with your data.
They just need to provide the bare minimum value so you don't leave.
Once there's a critical mass, like email, then your other data accumulates automatically, due to data gravity.
As long as you stick around and are there to see ads, they're happy.
A maximally used, minimally liked product.
This happens, inexorably, to every hyper-silo.
The other silos can't compete because they don't have the data, so the ones who do get less and less competition.
It leads to the heat death of value for your data.
Maximally boring stasis.