Don't worry, Amazon screws authors directly too when they self-publish, by using the cudgel of Kindle Unlimited to choke possible competition in ebook sales.
https://bsky.app/profile/glynnstewart.com/post/3leu7lzvy622g
https://bsky.app/profile/glynnstewart.com/post/3leu7lzvy622g
There's entire genres like litrpg, progression fantasy and cozy fantasy that likely would either not exist or be a fraction of their current size without it.
And authors can make a living, there's plenty in those genres (not to mention romance) who via a combination of patreon + KU + Audible are doing just fine.
I too wish there was someone who could compete with amazon, but the thing is nobody seems to actually even try? I feel like the entire book industry would be quite happy if things had remained stuck in time circa 1990, on their own they would never have invented something like KU.
Apple was starting to compete, got sued by the US government for it, and decided they didn’t need to bother.
US market is heavily skewed in Amazon's favor though.