The one building the datacenters aren't the ones making the chips. A construction of a datacenter can be halted suddently and an order of chips cancelled. We might assume that the chip makers are ready to supply said datacenters, just they don't necessarily feel necessary to build new factories for the consumer market which itself might not be ready to spend the same amount of money on RAM chips. And building factories do not magically create price reduction, quite the contrary. The consumers buying $150-200 smartphones aren't necessarily ready to buy $400 ones. Most would just buy on the second hand market and replace less often their phones instead.

Whales being whales, they will pay the highest end iphone at any price, no question. But the market is not made entirely of whales.