When a new law is enacted, it's not prudent analysis to assume anything about how it will be enforced based on the previous law, especially not when fines were increased 25x - GDPR is
not a minor clarification of a few bits and pieces, it's a whole new thing. The previous law was
specifically criticised for having no teeth, and the new law has
specifically been highlighted for it's new teeth. Of course it's possible that regulators will just sit on their hands, it's just not very likely.
The only reasonable assumption is that those new teeth will be tried out, and whoever they will be tried out on first will have a bad time. Do not assume that the first cases will be Google and Facebook, the regulators aren't stupid enough to try their luck first on the two organisations that has spend the most on being technically compliant, and has bottomless warchests to fight it.