I would understand if this was an April first joke, but cmon. Even the PS2 could not match that in only 5 years. The DS and Wii didn't either. Does this analyst firm have weed smoking parties? Even Pachter would not say such ridiculousness.
After demand is met, the games start winding down (I don't think Nintendo can possibly keep up this first party release schedule for a second or third year), the novelty of the Switch wears off, and Sony and other companies copy the Switch formula, I think Switch sales will likely not even match PS4. PS5 will come and crush it in a couple of years, most likely. It may have switch like features. Or Sony may release a portable PS4 type of system that can be "docked" like the Switch. It would have to be digital download only.
I think the best idea to combat Switch is to make a unique system besides the PS5 or a portable PS4. PSP2 with docking would be awesome! As powerful as PS4 but with unique cartridge games just for the system. PS4 digital games could be downloaded on it for portable play. However, I don't think Sony has to copy Switch at all. The PS4 will continue to do great and when PS5 comes along, it will make Switch look archaic.
I think Switch will do very well for two to three years and then taper off. Will it be a large success? I think it will. I think 75 million to 100 lifetime. 130 million in 5 years. Please.