I switched to Firefox because of Google banning Bypass Paywalls extension that is available as a Firefox add-on. When I was building my bootstraped company, Google really taunted us with emails like this, when our AdSense monthly earnings reached $10,000 and we're my only source of income. We had 20 million user profile pages, and they were saying that something is wrong with some of them, without saying what, forcing us to "review" them all. We built sophisticated ML content filters, to receive more unspecified warnings and get the account shut down. I managed to reinstate the account, but it left a very evil taste. I am in the process of degoogling, using Bing as the default in Firefox.