Sigma 60-600 Equivalent

[ruzun]

I guess this applies to all the major camera makers, but in the world of Wildlife Video there is really only one lens that people with normal budgets buy and use, the Sigma 60-600. I am kind of curious why Nikon/Canon/Sony etc simply cede this market to Sigma. Certainly they could make a video-centric zoom lens that is of better quality than the 60-600mm. It would be lighter and at least as fast. I'm sure they could make it sharper. Such a lens could be sold for quite a bit more than the Sigma, people would easily pay $5k or $6k for such a lens. Right now its basically the 60-600 at around $2k, or the canon Cine-Servo 50-1000 which is about $70k. Nothing really in between. If they made something like a 60-600 with a built in 1.4x tc, they could easily charge up to about $10k and they would be very well received. Even without a built in TC people would easily pay $5k or more for such a lens in their native mount. I wonder if it's just not a big enough market for anyone to pursue.