I think that many people naturally expect Google to work like a lot of other companies, which are focused on satisfying individual customers.
Google, though, is unusual that most of their users are not Google customers. They are the product. So Google's relationship to most individuals is statistical, not personal. If they care about me as an individual, I have never seen the slightest sign of it.
I also think that a lot of things at Google get started and killed not on the business merits, but due to shifting internal politics. Most of my Google friends have left, so I don't have recent examples, but from what I hear Google Plus is a fine example of something launched because a powerful executive got excited. As the political winds shifted, though, it got neglected, and then eventually killed.
Another interesting example for me is Google Reader. I liked the product, but was never clear to me why they built it. They ignored it for a long time and then shot it in the head. Giving it away crushed the market for commercial RSS readers. Once they stopped, that market came back, proving that Google could have had a successful commercial product if they had bothered to run it like a real business.
So no, I don't think we expect them to continue all things indefinitely. But I would love to see a more clear logic for what they will continue to support, because from my perspective it's erratic. I would be very unlikely to build a company that depended on Google; despite having used them for 20 years, I still don't think I can predict their business strategy. In contrast, I've been using Amazon for a similar period, and I have a pretty good idea of what they'll do. I'm not worried they'll EOL the AWS services I use, for example.