Google is getting away with this behavior because of their monopolistic behavior. If they had competition, they would be spending billions on customer support, but because they have a monopoly, they can get away with having virtually none. This is their way of saving money and taking advantage of their monopoly. It's a shadow version of monopolistic behavior where the absence of services can be done because we have no choice. We need to politicize this issue.
Facebook is exactly the same way.
When a company reaches such dominance, and when people completely rely on a company like we all rely on Google, Facebook, et al., then we need regulations to prevent what is happening right now, which is using their monopoly to make life easier for them by not spending any money on customer support.
Would you prefer government change this balance by regulation, or let users decide what they want?
Many users choose very cheap typical service with a small but real risk of misery. Perhaps it's because they don't understand how miserable it can get. It's important that the bad experiences see public light so people's choices are informed.
They provide products like gmail for free because it allows them insight into people's communication which they can then leverage with search and ad networking to make way more than they could simply selling email services.
"These ads are shown to you based on your online activity while you're signed into Google. We will not scan or read your Gmail messages to show you ads." https://support.google.com/mail/answer/6603?hl=en
> When you open Gmail, you'll see ads that were selected to show you the most useful and relevant ads. The process of selecting and showing personalized ads in Gmail is fully automated.
They created that page in order to highlight that there are no humans reading your mail, but OP's point that "it allows them insight into people's communication which they can then leverage with search and ad networking to make way more than they could simply selling email services" is still true to this day. It's just that it's all automated.