Very good points. The problem is that most established players in various fields are happy to play it safe and milk the consumers for big bucks for small improvements. We saw this in the phone business with Nokia and Blackberry when Apple and later Samsung ate their lunch. By the time a new technology like mirrorless FF has caught up these established players can't move fast enough to catch up with the market leader and once they start bleeding money they don't have the resources to catch up. As an enthusiast I've been waiting for almost 10 years for a sub US $1000 FF(new release price) but the established players have been in no hurry. Finally happened last year with A7II but that is a last generation with no 4K video. In the meantime the most innovation in imaging in the last decade has come from smartphone manufacturers squeezing the low end as well. I suspect that only one of Canon, Nikon, Olympus and Panasonic will survive in the camera market in the next decade. If you place a bet on the wrong horse you are going to see your equipment depreciate rapidly. Even my X-T3 has depreciated as much as a A7III bought several months before its release(about $300-400). That is the price for 4K 10 bit 60p internal. Buying a camera from these players today could very well be like buying a phone from Nokia or Blackberry in 2011. Only people with sentimental attachments or very specific requirements/mandates (encrypted corporate email, 4k 10 bit) will do it and these people should be prepared to pay a heavy price in the form of accelerated depreciation.