The PS2 launching plan included the shipment of 1 million units ; however , due to a manufacturing problem , only half was shipped .
While the PS2 's October 26 U.S. launch was marred by shortages , this did not benefit the Dreamcast as much as expected , as many disappointed consumers continued to wait for a PS2—while the PSone , a remodeled version of the original PlayStation , was the best-selling console in the U.S. at the start of the 2000 holiday season .
Sega