According to this
History of NAUI, there was a club atmosphere in the USA in the early days of scuba. In the mid to late 1960s, the new agencies providing instruction had to come up with a way of meeting students to certify. They tried 3 different approaches.
- NAUI, under the leadership of a college professor, decided to focus on teaching through colleges. Students had to sign up for classes and pay the tuition for them every semester, so getting scuba certification would be unhurried and essentially free to them. While that was true, the authors admitted that in the long term it was a bad idea because of the limited potential for students.
- The YMCA decided to focus on dive clubs for their students. As dive clubs fizzled, so did their pool of students. They eventually stopped teaching scuba.
- NASDS and the NAUI offshoot PADI decided to reach students through dive shops. People buying gear would want to learn how to use it. That turned out to be the winning idea.
So why did dive clubs fizzle in the USA? There are indeed dive clubs in the USA today--just not very many, and they do not focus on instruction. I certainly don't have any definitive proof, but I have a theory.
Years ago I met some people in a dive club, and they told me that they used to be associated with a specific sponsoring dive shop, but that dive shop withdrew its sponsorship and posted a permanent sign saying they had no relationship with the club, even though they actually continued an unofficial relationship. That was done on advice of an attorney, who worried that the shop could be sued for something done by a club member over whom they had no control.
That fear is very legitimate. One of the most important scuba lawsuits ever was the case of drifting Dan Carlock. Dan surfaced from a dive to find his boat was gone. The two DMs who took the roll after the dive had missed him. He was eventually picked up by another boat, and the lawsuit got him many millions of dollars. One of the parties successfully sued was PADI. The argument was that because PADI had certified the DMs, they were acting as agents of PADI. (That is why liability waivers today specifically state that you understand that the professionals are not agents of the agency.) The DMs were, however, agents of the dive club that had chartered the boat, and they were acting on behalf of the dive club when they took the roll. I never heard about how the dive club made out in the suit, but I suspect it hurt them.