Look up and see who posts in the PADI forum. I'll give you a minute, and talk about the 800 lb gorilla for a minute. PADI claims that they are the way the world learns to dive, and they have a right to make that claim. I don't know what the percentage is, but at one point, more folks were certified PADI than all other agencies combined.
So, did you find the PADI forum? How about the NAUI forum? No? It's because the entrenched "industry leaders" like DEMA and PADI and NAUI and etc. etc. have no use for SB. We're a bit free thinking here, in fact, we're way too individualistic to follow the leader. PADI thrives on doing it the PADI way. Suggest that students read SB? They'd sooner have their teeth drilled without Novocaine.
PADI employees are not allowed to have a SB account. That's fair enough, my employees are allowed to have one, but are not allowed to discuss company policy on SB either. If PADI employees were sharing PADI policy on SB, there would be policy out there that PADI doesn't control.