When you say "Patron" do you mean paying $30 to be a supporter?
Look, this is how it looks:...
Close. That's the idea, but just for semantics sake and speaking from my own experience:
I paid $25. That gave me access to design journals, polls to guide monster, encounter and theme development. There was a community of patrons that could discuss aspects that we liked and disliked, with Wolfgang taking this into account. The process took about 3 months; I had something interesting to read at least once a week. I was one of the DMs chosen to playtest a portion of the adventure.
I was also given the opportunity to purchase
Castle Shadowcrag, the previous project.
At the close, we were given a pdf. A period of time later, I forget how long, we were given a pdf with all of the editing corrections and errata incorporated into the pdf.
If / when we wished, we could go to a separate entity and pay them to produce a physical copy. Wolfgang set things up with Lulu for our convienence, but it could have been any third party we wished. He did all of the copyright footwork with them. He didn't get a cut of the Lulu price.
If you put your money down, you get a pdf. You may consider that overpriced, but you are getting something custom made. When it is done, it is yours. The time limit comes in when the project is started and someone wants in after the project is completed.
If I am understanding your concerns, I share them to a certain extent. I don't think that it is in the least underhanded, but I do find it expensive. And, it is the reason why I have bought in on only one project. It would have to be directly applicable to my gaming needs, with very little adaption. Also, it takes some time to keep abreast of what the pending projects are. You want to buy in at the beginning, not at the end.
I
really wanted Steam and Brass. Badly.