Is There a Collapse in Commercial Book Publishing?

A decade ago, I had a hypothesis that the commercial book publishing industry was going to completely collapse within a decade. And so as a result, I really went on a writing spree and published three books within a basically a four year period. My plan for myself, my strategy has now changed, is I am intending to promote the long game for five years. So I have vowed not to come out with another business book until at least 2026 because I really want to be writing this wave.