Business models and business model changes. Not ours, but a general observation I’ve made.
This is oddly important for me (outside of the business) as I’ve been writing some stuff I’ve been thinking of submitting for “publication”, and what “publication” means is rapidly changing.
FWIW: this is science fiction stuff. I’m an avid reader of these things (much to my wife’s dismay, given the number of books I buy), and I am enjoying writing this stuff as well.