I don't own a dedicated camera, but from what I heard the Japanese camera makers are so afraid of cannibalizing their existing lineups that their new stuff wasn't exciting enough to even keep the pros interested.
Yes, this is simply untrue. The high-end mirrorless offerings from all brands are all significant steps up from any DSLR, with the possible exception of AF behavior in
very low light. (well, and battery life) Far better autofocus, far better burst capabilities, and while expensive the premium mirrorless lenses are lighter, faster and optically at least comparable to any DSLR lenses. Eye focus has made portrait photography almost idiot-proof, the new stacked sensors and AI tracking autofocus have revolutionized bird and wildlife photography, and multi-shot bracketing and computational modes have dramatically improved things like macro and landscape capabilities. Any struggles the camera market is experiencing is NOT due to the fundamental capability of the cameras themselves.
The problem in the camera industry is largely the same as in the audio industry - the mass-market entry level has been basically eliminated by cell phones. The step up from a phone is too expensive, too bulky and requires learning a new approach to pictures and so fewer and fewer people are entering the 'dedicated camera' market. This pushes prices up across the board to the point where the 'entry level' is now more or less where the 'advanced hobbiest' was 10 years ago.
The demise of DPR is certainly unexpected and is potentially significant to the hobby - it was by far the largest community on the web, and while it had its problems there really isn't an obvious replacement. It is likely that the community will fragment, and honestly even many of the smaller/niche sites that might have been alternative destinations have already seen their own erosion in the search for sustainability. (e.g. mu-43.com has long been THE site for micro-43rds discussion, but the original owner sold out a year or two ago and the new owners are absentee and are really only interested in harvesting ads and clicks). I still hold out hope that someone will manage to buy it wholesale, but it may well be too late for this (e.g. the DPReviewTV guys have already moved to PetaPixel, and so wouldn't be part of any buyout/migration)