Indie publishing on the other hand is drowning in a mire of its own making. The "tsunami of crap" it was accused of 15 years is now very real.
I don't really agree with that.
Amazon is a bottomless pit.
The top 500,000 books sell, and the rest just sink down the abyss, and vanish.
They poured in hundreds of thousands of low content books, and they just vanished. People are still pouring them in 3 at a time, and they still vanish. Same with Bot drek. It just vanishes. Same with short books people think will make them a fortune.
The reality is now that if your book doesn't have pre-orders, doesn't sell on day 1, or doesn't get any KU downloads on day 1, it just vanishes. And after that, if the book stops selling, it is moved down to make way for one that is.
None of them impact on those selling at all.
The top 500k is pretty stable. Amazon moves things down over time, but sales keep a book there. What fails to sell is no threat to anything selling, nor does it make it harder to find them.
Over time I expect that 500k to reach 600k, but it doesn't seem to be in a hurry.
For now, the 'mire' is basically irrelevant to people who read a lot, and who hunt the top 100 lists and back catalogues of people on them.