Putting aside that several of these were acquisitions, these are all great examples of things where Google introduced something for free because it would make the money through advertising, both directly and through ecosystem effects. Even the paid enterprise versions of these services were a tiny % of Google's overall gross revenue.

Prior to the push into Cloud computing, Ad revenue was well over 90% of all Google gross income, and Cloud was the first big way they diversified. GCP is definitely a credible competitor these days, but it did not devour AWS. Other commercial Google services didn't even become credible competitors, e.g. Google Stadia was a technically exceptional platform that got nowhere with customers.

The question now is whether Google carves out an edge in AI that makes it profitable overall, directly or strategically. Like many companies, there seems to be a presumption of potentially infinite upside, which is what it would take to justify the astronomical costs.