Run your own GB.
Two main things influence the GB.
WHO is running is and what they want to put in there.
Numbers from other GBs which people just have a feel for. If you want a true aggregate, why don't you do it? If truly there is a lot of demand for 40s/ortho and you can show it, you'll gain more support. Bars on GMK weren't normal until enough people complained about it. Now they're standard in basically every GMK GB..
I do think in you're probably overestimating the popularity of 40s/ortho...but hey, prove me wrong.
I'm not a data scientist, nor do I have enough curiosity to match that amount of time. But I am a little curious, so here is some data from some of the most popular sets in recent history from each profile. Note that many ortho users mods might buy standard mods, but not many standard users will buy ortho mods. Anyway:
KAT:
https://media.discordapp.net/attachments/727625118137974896/766025129640984606/KATmizuStatus201001finYext.PNG?width=1433&height=912
Not many ortho here at all. Granted, the ortho set was a lot less cool because of the lack of any real novelties. Standard mods had about 9x more purchases than ortho and ergo combined. Ortho/ergo 6%, 40s 5%.
https://i.postimg.cc/bq5JFsQd/KATcyberspace-Status200904fin-Yext.png
More than the other one, ortho/ergo 18%.
KAM:
https://i.postimg.cc/YppBSGrr/KAMsuperuser-Status210302fin-Yext.png
I have a gut feeling that this set attracted the highest ortho/standard ratio. Ortho/ergo made up about 22% of the modifier buys here
GMK:
https://i.postimg.cc/fTPhRP8J/GMKmodern-Dolch2status200702.png
Not a great set for ergo support, but we can see that Ortho/40s made up 12.7% of modifier buys here (noted for the fact that ortho/40s users still have to buy the base kit).
I think you're wrong there. Lots of people will buy many different mods because, as pointed out by Leslieann, they want the full set. They want options, they want easier/better resale, etc.
There are tons of factors that come into the buying decisions..but you're interpreting them the way you want including making excuses for why. Plus your calculations are wrong in some cases but nevermind that...
Here are some things to ask to understand some of the factors:
Lets just say 10% of all Alpha buyers, bought 40s mods when only half of the GBs have them for sale.
Do you think it would still be 10% if EVERY GB had them available? Maybe, but probably not. (it isn't even consistent now)
So there is an element of them not being available all the time..
We can also probably agree that 40% users are likely to be some of the most dedicated to the hobby..which means by GB, they are probably more likely to participate than others, even if only marginally so. So while those users are in the tiny minority, they're more likely to buy in general.
When I look at the numbers you've just shown, whether or not to support 40s/ortho seems marginal. If I were running a GB I'd certainly consider putting it in there but it also depends on what I'm trying to achieve. I'd also consider if there were a ton of previous offerings, I may not bother going through the effort but I probably would.
The short of it is, if you want more 40s/ortho support, run your own GBs...that's the only way you're going to make sure it is in there. Either that or convince people there is a significant percentage that wants them. Unfortunately the numbers don't seem to point at that. But using Barred F J in GMK as an example. NO GMK GBs had them before. Most hardcore GMK lovers wanted scoops and the thought of bars seemed ridiculous. Some polls (which aren't scientific but showed the high percentage of users that actually wanted it), plus the low cost of adding them vs. many GBs at the time adding support for some less popular layouts, made adding them a no brainer but it took years for that to happen. It probably really helped that one user in particular looked into how much it would be and actually bought some. If the demand isn't there, try creating the demand. Get people on board to 40s, to Ortho...run really cool GBs..maybe consider running 40s only GBs...Or consider piggybacking on a current GB and running the 40s mod part on your own. (Front the money, etc). I'm sure some GB runners would be ok with that.
Point is, to me this sounds like people complaining about something and wanting the hobby to fix it. It is "someone else fix it because *I* want it." Unfortunately, unlike the FJ bar thing (which was more of an unknown quantity), you have the numbers working against you...so do something about it if you really want it changed.
