If you are willing to pay for protonmail.com, why not just use GSuite or O365 Business? The content of your emails are not used for marketing and you get more f

If you are willing to pay for protonmail.com, why not just use GSuite or O365 Business? The content of your emails are not used for marketing and you get more features/products for your money. My threat model is not disgruntle employees searching through my emails, or govt. out to get me.