I understand the business behind price drops, I just don't think $150 by 2019 is feasible. That's cheaper than a 3DS.
Switch having huge potential for peripherals and accessories definitely helps though.
15000 by 2019 is completely unreasonable, and it shouldn't be expected by anyone, with each generation console prices have gone up, and the value of the yen has decreased. I think people would be perfectly fine with it being in the 25000 range by the time Pokemon comes out.
Price before Tax is Y29,980
It exchanges to that yes, but to people who earn money in yen, ~30k yen is not equivalent to 260$.