I could see a few years of "pause" but if aircraft under 76pax/86k don't exist, regionals won't have planes to fly and mainline will get a small bribe for a big scope gain to allow them. It would take some time, but look at the stages thusfar... 19 to 34, 34-44/50, 50-76(some cases 86-99, yet limited). If the biggest thing is a 900/175(current model)... new tech and market forces will create the storm of either raising scope or losing regional feed. What this article states is what many have known in the latest rounds of contracts- more mainline jobs. This is the equivalent of age 65 vs 60 for rj manufacturers after the pilots worked through it. For 5 years, stagnation and preservation, then a thrive.

Just my thoughts.