The real important thing about Digital-Original publication goes beyond the fact that authors make more money off each sale than through traditional publishing. It's that we get to bypass a system of gatekeepers who have more than 'quality' as criteria for what they choose.
Digital-Original just shifts the R&D costs for publishing to the authors and affords us the chance to write the stories we want to write and the stories our patrons want to read.
I sell a lot of ebooks from my website and encourage authors to set up their own stores.
Authors will make far more on those ebooks through direct sales than publishers are offering. There is no incentive for authors to sell those rights to traditional publishers which means, in the fairly short term, publishers run out of material to sell.