[bryanlarsen]

It seems to me like they are aiming to make one amazing chat app. It's called GSuite.

For example, it'd be very useful if you could collaboratively edit a document in a chat app. So should your uber chat app swallow Google Docs too? That would be a beast, and the HN would scream.

No, you make a bunch of smaller apps that embed, interoperate and integrate.

And once you've built a bunch of integration points for your own apps, then you document them and make them available to third parties. Voila first-class fully dog-fooded integration points rather than third party integrations being distinctly second class citizens.