"Horizon Air put Cascade Airways out of business when they started flying metro liners on Cessna 402 routes."
Cascade never flew 402's and Horizon bought Cascade out before they "went out of business".
Moses Lake has seen Horizon service in the past. Big Sky was there as well. With the EAS contract dropped, it seems that there was no one who wanted to fly there. QX still serves Wenatchee and Yakima.