Correct me if I am wrong but I believe that SDI was first with solo diver, first with an emphasis on computer diving vs tables, and some other firsts. Think they were one of the first with an emphasis on elearning. In each case PADI followed up with the same thing.
Not a bash. Just my observation. Larger organizations are often less nimble than smaller ones.
You are correct. I'm not sure that agility falls under "philosophy," however. Maybe.