A number of companies have considered introducing a 1903/08 Pocket Model clone, and given up on the idea. For one thing, current buyers want a pistol of that size to be chambered in 9mm Luger, not "weak" cartridges like the .32 or .380 ACP. Unfortunately the straight-blowback design of the 1903 won't stand up to the more powerful cartridge, and the magazine well isn't wide enough (front to back) to take the longer cartridge.
The frame was designed to be made from a machined forging, and has very thin cross sections and walls in the handle area. This sort of thing doesn't lend itself well to investment castings or polymer technology, and if the pistol was made "the old way," you wouldn't buy it.
There are those - including me - that like the old pocket pistol, and there are enough used guns on the market to satsify the need at prices that are lower, sometimes much lower, then what a quality reoroduction would cost.