It is not uncommon the take a thesis and publish it as a book. In fact, many theses are bound and printed in limited quantities. Self publishing print-on-demand became popular 5 or so years ago. They may exist for sale, but it's really not about money. I have some publications that there are pdfs floating around for as well as bound print copies. If anyone wants some dated work in fluid dynamics and plasma physics with maybe 40 citations in total message me. They can be yours for $100.
“Every man should be capable of all ideas, and I believe that in the future he will be.” ― Jorge Luis Borges