I think that post from knifeswapper about SS knives not selling is not representative - and I am not sure it was intended seriously
It may not be representative these days, as the largest GEC dealers now were not carrying the brand 6+ years ago. But those that have been with GEC since day one do remember how slow SS models moved. I am actually thinking of a time well before the Navy knife. There was a time when SS wasn't relegated to niche knives (Navy knives, Bird Hook Trapper, etc.); and they would sit on shelves for months.
Things may be different today, maybe not. You only find out by making a few thousand SS knives and hoping they find a market. But, that is a game of chance, which some don't have a stomach for. Sure, there is a lot of posts about wanting stainless; but that is not a new phenomenon - and it doesn't historically correlate into volume purchases. Then, as is already being mentioned in passing, there will be the conversation about "why not use a good stainless"; which has been well discussed. Or, "I don't want that pattern, but if they make this pattern in SS - I 'd buy several".
I too would like some SS models; but since the recent history is still within the bounds of my memory - I don't push it with GEC. Just like I don't request more of my favorite pattern - the canoe. Another knife that was well chattered about on the forums right up until release; then crickets chirping. And the Lady Leg, the GEC let a large blue reseller talk them into - then crickets. I don't think everyone realizes the implications of small companies having tens of thousands of dollars worth of product sitting for months on the shelf.
In 2014 I had accumulated some cash in the business account and contacted GEC about buying some of their inventory. When the box arrived, it had a large percentage of 3-4 year old varying SS models. So they were carrying a lot of them on their books for several years. Thus, you can somewhat see justification for pause from them in a time where their runs need to be 2-3k knives for economy of scale.
2018 is a new day in traditionals and the SS market may be gang-busters now. And my actual experience may not be representative of others expected experience - but in my mind history still needs to participate in the thought process.