Google is making money off of you by selling your data and showing you ads. The fact that the money they're making off of you isn't coming directly from you is irrelevant.
Whenever a company has hundreds of billions in one hand and an excuse not to spend it it is usually a case of "privatize the profits, socialize the costs".
Ban gmail addresses being used for government services, banking, health, utilities etc if they don't want to dip into the staggering profits they generate off these "free" users to guarantee basic rights and recourse from their own systems.
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...those more options:
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I find it hard to understand your comment as you have put a banker title in your profile, but at the same you are out of sync that Google is already providing bank services...
That's the reason I hate to peek at people's profile when I don't agree with their comments. Now I know that OP is a banker and deals with private equity, I can't answer him, because I'd fatally slip into an ad hominem.