Amateur Photographer was looking at the mirrorless cameras sales performance recently
http://www.amateurphotographer.co.u...-camera-sales-crash-special-report-with-video and raised some valid points, including Canon/Nikon brand loyalty and confusing nomenclature.
They did however miss one key technical aspect - the viewfinder. The reality is that the current models are still pretty much inadequate compared with most full frames (I don't have an APS-C). I looked at Fuji X-T1 and Samsung NX30 at the show. I was really disappointed with the size of EVF. They are so tiny it is not really possible to tell much about the scene at all. The dSLR full frames have a bright and large field of view that allows working with comfort. While pixelation of the EVFs has been decreased, it was still visible, and even worse the low refresh rates caused a lot of flickering under artificial fluorescent light. I haven't had a chance to play with A7, but I don't expect miracles after watching the latest DigitalRev 5DIII/A7 comparison. To be blatantly honest the CSCs are best on tripod with the LCD screen for landscape work and perhaps for video recording.
According to article, the main selling propositions is to the pros and advanced amateurs looking for a secondary just-in-case go to camera. That makes a lot of sense.
So, as a cheap compact CSCs are too expensive and perhaps too complex, particularly when it comes to instant instagramming of pics. Hail the iPhone!