Look, Amazon is not a monopoly. They might be a large market share holder, but they have competition:
Google Play Books
The problem is that Amazon is doing a better job than all of them. They are selling 90% of the eBooks. I am not sure about the print books. The other companies aren't doing anything different. They are using DRM. If you buy ebooks through them, you are pretty much locked into using their app.
Amazon is making plenty of money off of indie authors and they don't need publishers. So this is not bullying. It is simply business.
Why should Amazon add books that will make them less money?
In what business does that make sense?
It is time that authors realize that publishers are no longer what they once were. Why?
1. Good editors are everywhere and cost $2000 or less.
2. Good book cover designers are everywhere and cost $500 or less.
3. Good print layout designer are $500 or less.
4. Good publicist/marketer is $500 a month ($6k a year)
5. Distribution is easy. Now distribution is done online through all the stores I just mentioned. The last remaining distribution channels that publishers have are brick and mortar stores (which are declining) and libraries, which are now including the ability to checkout eBooks, even from indie authors.
So publishers are realizing that their only value are these:
1. One time upfront cash infusion (cost of editor/cover/print layout)
2. They can send an email to their large contact list.
3. A sense of quality.
If an author builds their own contact list, then #2 is canceled out. That means all a publisher is anymore is one time service. Why would any author give up 80% to 90% of profits for nothing more than a one time service? Hire your own editor, your own cover artist and your publicist. You pay $9k and you own 100% of your work. You get %70 from all eBook sales on amazon.
The final feature, quality, is not going to last. Indie authors can write quality. Check out this: http://scififantasyreaders.com...
Pretty soon, there were be quality standards that indies follow. What will be left of the publishers? If they don't change and adapt, they will all go out of business and only their names in the books they once printed will remain.