There absolutely is a market for a new 'premium' smartphone maker to arrive.. But given the hardware prices currently, we are stuck with two companies who are purely now squeezing every cent they can out of us while destroying their experience.
Okay, probably not the Trump phone but all the other's I've listed make some pretty great (and expensive) options.
Now if you are looking for luxury phones, that's a different thing. Something from Vertu would likely qualify. They are expensive and are made from high end materials, but the phones themselves aren't that special.