Please back this massive claim up with some evidence.

If there is none, please realize that a lot of companies use G Suite and pay for these services, which might allow Google to provide them for free to individuals. I don't know for sure that this is the case, but I have seen no evidence for your 'claim' either.

You want evidence that Google provides free services in exchange for tracking and interpreting all of the content passed through its services, turning it into a multi-billion dollar enterprise?