I have to disagree, there are couple consumer grade 1440p 144Hz monitors (FreeSync) - ASUS MG279Q, Acer Predator XF270HU and even 165Hz one - Acer Predator XB271HU (G-Sync) all IPS. There are also VA Ultra Wide panels like BenQ XR3501 and Acer Predator Z35 with 3440x1440px and 144Hz. Technology in this area is recently progressing with decent speed.