I hope they all loss money on them. I don't even want them to break even.
I think a lot of of them, if not most, will do win a bit. As months go by and the prices gradually drop due to the increase availability of systems on retail level, they will cash in off those few units they managed to sell over the regular asking price, and eventually they'll sell the remaining stock at normal price. That's what I'd do, I know more than anyone would be willing to spend 600 for a machine if they're so desperate for one.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.