The guys that started PADI "got" the free market system. They saw that scuba training was not meeting the market needs, and they created a new training system that met those needs. Their new business model worked spectacularly well in making scuba accessable, and most divers today are divers because of the new training model that PADI invented.
PADI and the other agencies continue to change and innovate as technologies and markets change. That is a good thing. Business must continue to experiment with new products and new ideas. As with all businesses, they must evolve or die. And it is the consumer who will decide what is wanted and needed and affordable.
Yes Mike, with the intent of increasing diver equipment sales.
Like any industry leader, PADI gets its share of criticism. Your idea that PADI customers are not getting good value for their training dollar is easy to test: Just start your own training agency and offer a better deal.
Regardless of training agency, value is a matter of perspective. Some consider value becoming certified with the least amount of training possible, at the cheapest possible price. Others may consider value as being trained to a high level of competence. What the Student gets for his training dollar depends on the agency and the instructor.
In any event, the Student's not always in a good position to ascertain value when they sign-up to anyone's training program. All too often I fear it's done in ignorance.