Your claim was about fingerprinting via Google’s scripts on other websites. Such a thing cannot be concealed. JavaScript code is visible. Even if the code is obfuscated, experts can still detect if fingerprinting is performed.
I'm pretty sure google has enough data to put 1 and 1 together the vast majority of the time.
Wasn't google caught illegally collecting hundreds of gigabytes of data from wifi networks already? They don't care.
EDIT:
Yep https://www.wired.com/2012/05/google-wifi-fcc-investigation/
Also https://oag.dc.gov/release/ag-racine-leads-bipartisan-coalit...
If you're counting on fear of possible embarrassment or bad press to keep companies honest you're in for a bad time. Legal or not, if something will make a company money, they will do that thing.