You make it sound like Google prices Gmail for free out of the kindness of their heart. They're a business. I use gmail for free because I feel it's in my best interests to do so, and they provide it to me for free because they feel it's in their best interests to do so.
The moment that agreement becomes invalid is the moment a person has the right to become frustrated.
That is, in my most civil interpretation, knee-jerk hyperbole.
You're certainly within your rights to feel that way, and if you do, I certainly encourage you to migrate to something else. If that's really how you feel though, I'm guessing you already would have unless... just maybe, the service is better than you admit.
You think that it is knee-jerk hyperbole because you
do not take account to the user the risk of using
the service.
The risk means that even if Google provides the
service free, it still can have a cost for the
user that can be very high depending on the
importance of the emails the user is locked out of.
It also means that the cost is invisible 99% of
the time, which is why people keep using Google
services. After all, most companies that offer
network services mitigate the risk for the
user by allowing the user to contact them for
help if things go wrong.
For example, Amazon Web Services and Microsoft
both allow you to purchase support. However,
Google seem to only provide support when they
decide to invite you to it.
In my personal case, my main email of 16 years
is becoming increasingly spammed. I needed to
find another email to migrate to, and decided
to try out Gmail. Gmail has failed my evaluation.
Google (read their terms) reserves the right to mine your communications for information that they then sell to advertisers. You're doing THEM at least as much a service.
The moment that agreement becomes invalid is the moment a person has the right to become frustrated.