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.
Being able to provide good support is a difficult skill to acquire and maintain, and most companies struggle with doing it regardless of how much they spend. You cannot get good support by throwing money at the problem any more than you can get good engineering -- it's a necessary but not sufficent condition. Moreover being able to provide good support requires a customer focus, attention to detail, and focus on quality that was never part of Google's DNA, and which Google prides itself as not caring about. To make Google into even a decent support company that creates as good of a support experience as Amazon (which is years ahead of Google) would require much more than higher margins, it would require a total rework of the corporate culture, leadership team, hiring policies, internal training and communications, etc. That's hard to do at a company that has such a dismissive attitude towards its user base, primarily because historically the real customers are advertisers and users are the product. It's hard to transition to more of an Amazon model where the end users were always the customers and the business was built around that understanding.