As far as publishing to Kindle is concerned....
https://kdp.amazon.com/help?topicId=A2VHRJZXET0TWT
As far as short run hard copy printing is concerned, rightly or wrongly, Cedars showed how cheaply and quickly this could be achieved.
Before anyone flames me down I support the distribution of the book in a structured way by parties with the rights to do so, The above are just a couple of points to indicate how quickly something could be done. Perhaps a little simplistic as I know the copyright owner wants to cover a number of bases both with print and electronic media and has had a lot of things to consider with copyright, ill health and so on, but there was a tremendous amount of goodwill here and elsewhere to supporting the copyright holder's aims and this is being eroded by lack of visible progress.
In the meantime distribution of the book as a shared PDF is no doubt continuing unabated.