The thing is Google Maps is not a monopoly. There are plenty of other map providers, so a price increase is not anti competitive, because you can switch to other providers.

There's not a single usable competitor to street view considering the coverage and quality. They got that imagery using money from non-maps revenue, while keeping Maps pricing artificially low for years, with the the practical effect of making sure that no one else could compete with them. So you can't switch street view providers if it's integrated into your product, and now you get to suck up an insane price increase. Which makes it in violation of the Sherman Antitrust Act here in the United States and I'm sure the EU has even stricter rules on monopolies.