I am doing the same. Chrome was the hardest move but Safari got much better recently and 90% of the websites are working perfectly only few exceptions. Has anybody tried Amazon Workmail yet? I would be interested in the experience.
If you host your email with Amazon WorkMail they have access to all your emails just like Gmail or G Suite does.
As you say, they are not dependent on their ad business, but they are making a lot of money from it. Expanding operations to improve profits is a no-brainer and they can existing distribution networks like AWS to have an extra edge.
[0 ]https://digiday.com/marketing/amazon-ad-revenue-2-2b-132-per...
Your point is moot, sorry
Do you have some examples of websites that don't work with Firefox? I've never considered moving to Chrome, and I've never had a problem (at least not since the death of IE-only sites).