For example with Apple they integrated everything together seamless into the OS - granted I am not sure if people are using their email app or calendar that often. But with AI they integrated it all together at least.
With Microsoft they benefit from their tight integration between Office suite, Outlook, teams (and calendar integration between outlook and teams is quite convenient) etc. They only have issues with consumer products as they are unable to achieve the same level of integrations as they achieve within the corporate - corporate Windows instances with laptops and stuff are corporate to Apple products for consumers. Microsoft does not have user facing products, but their enterprise solutions are nicely connected to each. And new services like Loop or Copilot are just naturally expanded on that.
But Google? I literally use Gmail but only for emails. Chrome for browsing but I have no integrations between Chrome and Gmail aside the account overall in my flow. They have their streaming service with Youtube Premium but it is not really that connected to overall other infra or services - unlike for example Apple, that is offering their Apple One subscription. App Stores? Google Play exists in its own universe that has no relation to other google services either. And that's without AI stuff.
There is something missing between google services.