The best way to communicate "stop doing stupid shit" to google is not use their services/applications when they do stupid shit. Losing market share/customers is far more impactful than any (currently possible) fines.
This illegal things needs to be stopped it is not enough that only the people that understand it stop using Chrome.
If you can answer that question, and then suggest a possibility for them to actually lose that much market share, then you may be able to demonstrate that losing the market share is far more impactful than any currently possible fines.