I agree with Tom L, and Jon Stewart,It's all about the money, it's a business.
Supply and demand. More people hunt with compound bows, then traditional bows. Because it's easier for the beginner, average person, to,accurately hit a target, with very little effort. A compound, with, 60-85% let off, sights, arrow rest, stabilizer, peep site, etc.
There's a lot of companies making a lot of money, selling these parts. So they go where the money is.
Traditional archery, takes work, and practice, to become efficient. Most can't or don't want to put in the time.
The funny thing is, that after shooting , both, Tradbow and compound, I find that, I need less practice with trad gear, then I did when shooting compounds. I can go a month or more without shooting my bow, then grab it and some arrows, go in the back yard and hit the bullseye at 20yds 1st shot. I find it more natural.
If more people shot tradbows, we'd see more trad hunting shows.