Google is a large monopoly that subsidizes “free” products to burn a thousand mile clearing around their money engine.
If Google maps was not free, there would be more of a market for competing mapping products.
A mapping product has a natural intersection with advertisements - a non-negligible number of mapped trips are commercial in nature, and can thus catch consumers right before the moment of purchase. This might prove fertile ground for a new competitor.
So Google gives maps away, and anyone who wants to compete has to compete with free, and starts with a tremendous data disadvantage.
Through this lens, requiring you to disclose more data makes sense. They strengthen their data moat around the free product, which in turn protects their dominant position in ads.
I would like to see regulators crack down on this kind of anti-competitive behavior.