Why would you expect MoCo not to act like a corporation? They do care for their users a lot, but they consider that they would not help them a lot if they did not exist.
Given the deep pockets that have risen to develop the Web to new lengths, Mozilla has needed more money and more developers. They are lacking in the chrome (the UI), in tooling, in platform presence (the iOS version came very late!), and little by little, in Web features. Not to mention musts like tab separation into processes, things that are now implemented in every browser but them.
(Edit: removed parallelism.)
Imagine you saw that issue, and need increased revenues. You don't want to impact existing users, as you know they would be mad. What do new users see that old users don't? Those empty tiles in about:newtab. Those tiles are useless anyway, and from a UX perspective, new users don't understand what they stand for. Having a few example websites would be a good indication. It fits marvellously in the constraints they had.
How about Pocket? As we discussed, their chrome is getting old. In particular, the bookmarks feature is both old, has a lot of old bugs that don't get fixed, and they have wanted to do an overhaul for a long time (see https://bugzilla.mozilla.org/show_bug.cgi?id=697359). But they lack development effort.
If only there was a company that did bookmarks better than we did, we wouldn't have to do the work! Oh, there is: Pocket.
One last thing that they can do to increase revenue is to make competition among search engines be felt. So they switched to Yahoo!. However, Yahoo!'s perspective was to show the world that Yahoo! Search had grown to be much better. Unfortunately, it is still behind as a product in terms of UI cluttering, quality of results, range of inputs... They still don't have a cartographic service! Let alone a worldwide routing engine and a GTFS crawler... So they may disappear.
It has become phenomenally hard to compete against Google. Their best shot at relevance is Servo now, but given the huge amount of work that is, they will still need deeper pockets.