Why should he change? People keep putting up with his crap, and keep buying his releases.
He puts a movie on a BD disc, without any effort to provide much in the way of quality (no menus, underwhelming transfers with poor compression, "brand new" discs full of scratches, covers that look like a poor photocopy), and yet due to the self-imposed scarcity, people keep purchasing his releases, at ridiculous prices.
Heck, he even pulls crap such as selling the titles as a bundle-only, people complain, and yet they still purchase them.
With so many worthwhile releases, from so many worthwhile labels, why support people like Bill?
For less than the price of one of his BD's, you can currently purchase, for example, the The Cat O'Nine Tails / Deep Red / Inferno, or the City of the Living Dead / The House by the Cemetery / The New York Ripper BD sets from Blue Underground. Or the recent The Beyond BD + CD set from Grindhouse Releasing. Or one of the Bava releases from Arrow. Or one of the Vinegar Syndrome BDs with 4k transfers. All without jumping through hoops.