How to delete data
Nice arguments, but no, it's more complicated than that.
Google can't just delete the data because the data are (potentially) evidence that Google committed a crime in collecting it in the first place.
If Google were to simply delete the data, it may commit another crime by destroying the evidence of the first crime.
It all gets ridiculously messy if Google tries to match up data with the people whose information they improperly collected and stored without revealling that data to the public or the government.