I don't know but maybe the best explanation for this is that Kemper is not for customers who come from "other modellers"
A rather ridiculous thing to keep suggesting. Lots of players come to Kemper and even leave Kemper from and for "other modelers", respectively. But to Ibot39 s point, it seems weird to suggest that maybe Kemper isn't for guys from "other modelers" who don't want broken buttons, faulty firmware, and lack of features. All those thing will certainly be rectified, but that's not the point you're making.
Kemper has its customer-pool within all these 90% of guitar players..who play tube amps.. folks who give a @#£& about an editor..it is all about sound for them..
That 90% figure doesn't feel real to me, not even on this forum. And given the deluge this thread has produced, not to mention in the FB group, official Kemper FB page, official Kemper IG clamoring for the editor, I don't know how you can seriously suggest folks don't give a "@#£&" about an editor. What you mean is that you don't give a "@#£&" about an editor, which is fine, but irrelevant to someone who does.
Kemper won this war
What war? The floorboard is certainly a formfactor that players have long been asking for, and good on Kemper for releasing one. But something new will come along and unseat it eventually in terms of units sold. That's just the inevitability. It's like if someone on the Line 6 forum suggest that the Helix "won this war" because it was the #1 sold digital amp emulator for a few years running. Eventually some new shiny toy comes along and guitarists clamor for it. The Stage happens to be that at the moment.