Sony could make f/1 lens if they wanted but there isn’t really a market for them, new lens beyond the 400mm f/2.8 is coming

Amateur Photographer published their interview with Kenji Tanaka from Sony cameras. Here is the recap from SonyAddict:

Mirrorless has a big advantage over DLSR’s speed, vibration, image quality
The diameter of the lens mount doesn’t matter
Sony’s 400mm f/2.8 is built better than their competitors
Sony could make f/1 lens if they wanted but there isn’t really a market for them
Sony might make a f/1.2 in the future
Sony has a 5-year head start on others producing lenses
The ILC market continues to shrink, but Sony mirrorless has been growing
Sony wants to figure out how to make the market grow
Nikon/Canon/Panasonic shouldn’t copy Sony if they want the market to grow
Sony isn’t focused on competitors
Sony has plans for another sports lens in the future beyond the 400mm f/2.8
Making bigger cameras is against Sony’s philosophy