Oh sweet sweet child, guessing you are too young to remember.
They knocked £100 off the price of the N64 weeks after launch, they cut the gamecube price weeks before launch. The only reason they don't cut prices in the handheld sector is because they run the show, but the switch isn't a pure handheld and will need to be priced in awareness of both PS4 and Xbone.
It's also worth noting that Nintendo being Nintendo don't actually set an RRP, but rather a SRP (suggested retail price). Which leads to a strange scenario where retailers slash the price, and then Nintendo lower the SRP to reflect this at a later date. So a price drop will be based on sales, rather than at Nintendo's discretion.
My guess is sales will slow down, and if any of the major titles gets delayed they'll have to slash the price to regain that momentum. I think in 12 months we'll be looking at a revised (but physically identical) model with the kinks ironed out, 1 2 switch bundled, and £50 off the price.