Financial reports don't demonstrate anything. You're providing an explanation without actually demonstrating that the provided explanation is the real reason. A shrinking DSLR market has been predicted by analysts (and manufacturers too) for ages now. The primary reason that keeps coming up is that people simply don't want to carry yet another device when their smartphone does more than an adequate job for general purpose photography. More and more the advantage of a larger sensor and better optics is only realized in a small range of professional usecases - Sports/action/wildlife photography, low-light events/astro photography, printing massive billboards, etc, etc.

I think there is a untapped market for some higher end camera with interchangeable lenses that can seamlessly integrate with a modern workflow.

Sure, maybe there is. The real question is.. is it a tiny $1-2 million market or a larger 100+ million dollar market.