I could compare it to a company like Cloudflare, who do offer lots of different public, free services (even if their market is different) and don't seem to have shut anything down.

Maybe not the best analogy either, but the problem is no other company has the kind of breadth of free public consumer-facing services that Google has, so no analogy would work. On one hand that could be a defense, by saying what Google's doing is unique and risky so sudden cancellations are to be expected. But on the other hand who knows how another company might handle a similar situation; we have no way of knowing.