They could have done 2 if the SSD was user replaceable. You have to carefully planned your MBP configuration, unfortunately SSD upgrade are terribly expensive.

They could have done 2 if the SSD was user replaceable. You have to carefully planned your MBP configuration, unfortunately SSD upgrade are terribly expensive. An extra 25% of the price to go from 256GB to 1TB. Actually that's probably fine for a professional machine, as you will be alright with a smaller disk until you replace the MBP anyway. For a power-user machine that you plan to keep several (5+) years, that's another story.