As Thom Hogan some days ago mentioned
http://www.sansmirror.com/newsviews/sony-goes-further-upscale.html
this new Alpha 9 is record breaking......but just in adding footnotes to the announcement text.
And that is characteristic for this camera. If you look in closer detail, the features and specs don't look so impressive anymore: More limitations than you think if you read only the marketing text.
But this camera clearly shows one of the main problems with todays digital higher-end cameras:
They are overloaded with expensive features and superfluous "bells and whistles" 99% of the photographers don't need. But they have to pay for it: With each generation the prices are getting higher.
4500 bucks? I buy a car with that money.
20 fps? Maybe "tech sheet masturbaters" like that. But not sports or wildlife photographers (I've been there, done that).
The 8 fps of the Nikon F5 have been sufficient for 99% of what you need in sports or wildlife photography. A good sports/wildlife photographer knows his subject and the right moments to shoot. And then you get the shot with 6-8 fps.
With current CaNikon DSLRs in the 10-14 fps range you really can do 100% of very fast action in sports/wildlife. No need for more.
If you really think to need more, it is probably better instead of making photographs making a video/movie.
More and more photographers are getting out of this extremely expensive "upgrading rat race" the manufacturers and the digital media (dpreview, petapixel, fstoppers, imaging-resource, lensvid....) are creating, making pressure on photographers.
More and more are realizing the nonsense of the megapixel-race: 99% of the photographers are looking at their pictures on 2k/4k monitors, so the high megapixel count is useless as the monitor can only display 2Mp / 8Mp.
And if they make prints, they almost always make 16x20" at max, for which 20 Mp are completely sufficient. Not more needed.
Same is valid for ridiculously high frame rates above 14 fps.
Photography is not about megapixels or fps or spec sheet records. It is about fun, memories and emotions.
But most camera manufacturers are ignorant and captured in their thinking of technological overload.
And because of that, the sales of digital cameras are declining.
And the sales of instant film cameras are increasing. The market for Instax cameras is now even more than double the size of the whole DSLM market.
But Sony, Canon, Nikon, Pentax, Olympus, Panasonic are ignoring the facts and this huge market. Instead they burn money in the over-competitive, low-margin, small DSLM market.