Charging a subscription fee is crazy for a product that is very expensive. I do not know why they are still around.
replies(7):
When you are an adult not in school you probably don't need "all apps" and it is relatively inexpensive to get just the product you use.
Anyway, they are still around because they still have some of the best set of features, and are industry standards, though this may change in the future and in some areas is already in progress (and I welcome that! They need competition to push them)
A big part of how they keep their relevance is people using those 'educational discounts' so that they are the tools that everyone learns to use in school, building up a moat against any alternative.