Every free tech service can be (notionally) graded on how much value it offers for how much of your data it sucks up and monetizes. Most of the time we see an initial high value that gradually decreases as the developer gets greedy.
Google maps has managed to become Google “best” service, but it’s important to be aware of the scale of problem we’ll see if they start squeezing it for increasing profits, since it sucks up so much of our data and manages to be so useful.
That’s the bulk of it, but there were other points being made about solving for edge cases that seem less central to the point.