Good day, @bernhard!
First of all, I have to thank you for being who you are. A lone talented enthusiast trying to build a sustainable living on top of our beloved CMS. But not just making sites like the rest of us. But creating your little module-selling empire))) Taking on every hard problem ever put in front of a PW developer and solving it in no time. You have leaded the way for us for some many years. Everyone here has been following you in one way or another. And thus I feel sad about you taking this decision.
Yet in the same time I can imagine the freedom you should feel after it. I really wish you good luck in any place your future journey will take you! I sounds like I am saying goodbye to someone leaving, but I am not. I am just saying that every end is the new beginning.
What else I would love to invite you into doing is to analyze why this path of yours (creating a bunch of super cool module) didn't lead you to the place expected. Recently @kongondo, the only other prominent paid module creator I can remember, has done the same exit as you. Why is this? This question is of interest to me because I have many times thought about how I myself could build my income upon what I love and know - ProcessWire.
Could it be, that PW is so much a DIY kind of thing, that most of us want to build something of our own and are not ready to subdue to modules authors' way of doing things (other than @ryan himself)? Or does everyone here enjoys opensource so much that proprietary is something to avoid? Or is it just simply not enough of target audience?