Ruger continues to make the GP-101 in 357. I would assume they figured they could save money by sticking to that product line. In fact they may have replaced the 357 Redhawk and Security Six with the GP-101 to consolidate.
Colt is pretty much thumbing its nose at the civilian population, going for military contracts on the M16 and LMGs. They had a few anti-RKBA policies even before the old ban.
Trust is earned, not... GIVEN away. - Worf