I understand my opinion will be unpopular/controversial. This will be the last reply I give towards the subject.
Bill, I believe you are correct and incorrect. Although it is necessary for go knowledge to be in a well presented form, I don't think that alone justifies the $25-50 prices that most books are out there.
1) The game of go constantly changes over time (this was accelerated through the development of AlphaGo), and the materials in theory books will become outdated. The ones that stand the test of time are the collections of life and death problems, and most of those are already well beyond the copyright date (70 years after death of author in Japan, 50 years in Korea and China).
2) There is a ton of available go content (ignoring the piracy) in the public due to the development of the internet. Youtube lectures, game records, mobile apps, and much more. It doesn't make much sense (at least to me) from a financial, and educational perspective for any player to buy a book, unless they just really want the book. It also doesn't make much sense for the authors and publishers to hold up high prices.
3) For financial support, I believe a donation of money to Go Associations would be a better for spreading information of the game as that money would be put into youth tournaments, more public events, and building of better infrastructure. As I mentioned above, go is a dying art. The money should be used to spread awareness in the best way as possible. The best thing that happened to go in the past 50 years was the AlphaGo vs Lee Sedol matches for this reason.
To wrap this up, I'm not endorsing piracy in any way. From a legal perspective, intentionally torrenting books that are still within copyright is wrong - that's what I did a few years ago, and I apologize for that. However, there is plenty of go material beyond copyright dates that can be easily downloaded for free, which I don't think should be condemned. In addition, people who aren't aware of copyright laws may end up downloading available content for their own reasons (perhaps they couldn't afford it, or the book is out of print), without being aware. To those, I'm not going to point fingers at them and say that they should delete it and buy a hardcopy. I'd rather hope that they make the most of those resources, become better players, and contribute to the go community elsewhere. We're a very small niche community, that's getting smaller and smaller every year, and any spread of the news is good in my eyes.
Some may agree with me, some may disagree with me - but hopefully we can respect each others views and move forward from here. I'm looking forward to filling my journal up with more go content and progress from here on out
