Leica, Nikon and Olympus cancelled their participation to the 2020 Photokina show

Photokina issued an official press release about the 2020 show. And there is some surprising news:

“We look forward to strong demand and applications from both the new and the classic segments of companies like Canon, CEWE, GoPro, Sony, Panasonic, Kodak Alaris, Sigma, Tamron, Carl Zeiss, Hasselblad, Hahnemühle, Arri, Rode Mikrophones, DJI and Insta360”, says Christoph Werner, Vice President of Koelnmesse. These are contrasted by cancellations, including from Leica, Nikon and Olympus

I  am very surprised that a  giant like Nikon will not show their products at Photokina. And even more surprised that a German company like Leica will not be at a German show!