Right. And the problem with rounding error businesses at large companies is that:
1. They're a distraction and
2. It's probably very career limiting to work on them.
Someone at IBM told me years ago that if something wasn't going to be a billion dollar business they weren't interested. And Google walked away years ago for organizing the world's knowledge if advertising wasn't attached.
There is an argument to be made that these… micro services were a part of a bigger offering from Google. Maybe by itself Reader wasn’t a billion dollar business, but together with other niche features Reader attracted an influential and wealthy audience.
It seems hard to argue that it would have become more successful, given that its successors are pretty good but they’re small businesses.