Funny little story, Tom. Several literary agents and publishers once told Paul Harding that his writing was too contemplative and not mainstream enough. Imagine their surprise when he won a Pulitzer for the book that wasn’t mainstream enough.
Sometimes it’s a little harder to find one’s readers, but thank heavens we’re not all mainstream. What a boring world that would make.
I half wonder how you’d do if you wrote historical mysteries for a pub like https://medium.com/history-of-yesterday — just thinking out loud, but I wonder if people who enjoy that kind of content would also enjoy the way you write.
Your audience is out there — finding them is the tricky part. But they’re out there.