Absolutely, and I have been happy to pay that premium. Still am for some product categories (iPad). But a mid-2018 laptop for $2400 that comes with 256GB of storage?
Given what a small piece of the pie Mac sales now represent, their company wide profit margins would be infinitesimally affected by equipping their flagship laptop with at least a 512 GB stick.
Bill it to marketing if it helps, but Jesus, throw us a fucking bone.