Authors who get a traditional publishing deal but have no control over their own pricing, promotions, Amazon page, and thus can't really do any effective marketing (I know lots of trad published authors who chose to go indie because they could earn much more). (creativindie.com)
You're right — although we strive to make our manuscripts as clean as possible, it's common for the occasional error to slip through (even in trad published books). (ryancaseybooks.com)
The first need dies away as all errata are weeded out (and there are plenty of trad published books with errata that can't be bothered to clean up — I want my books to be better than that). (madgeniusclub.com)