Yes but even a PDF needs downloading on mobile browsers.
Whereas the Books section of the Internet Archive has a consistent format and displays them all in-browser, it's so much more convenient and user-friendly.
It would be nice if we could read these books online rather than having to download a file and find some sort of reading app for it. Like, what am I supposed to do with an "azw3" file? And do I really want evidence of piracy sitting on my hard disk?
Whereas the Books section of the Internet Archive has a consistent format and displays them all in-browser, it's so much more convenient and user-friendly.
This archive should aim for the same.