These seem to be the reasons if the anime industry ever were to disappear in 5 years time.
-Recycled material/stories
-Overworked/Underpayed animators
-Less buys/More pirating
The recycled part is the manga artists responsibility, alot of series nowadays are generic as hell like Tokyo Ghoul and Seven Deadly Sins. It may have cool animation and look good(definitely not the case for Tokyo Ghoul Root A) but I've seen the same concepts, plots and storylines over and over and over. I get that manga artist are overworked themselves to compete with each other and therefore all try to take pieces of the most successful series in their industry with a twist in hopes that their own series will rival the best ones.
As far as the animators go, it's supply and demand but this kind of slave working isn't really sustainable. At some point they need to make the necessary tweaks in their systems to have a more stable environment. The animators living conditions are so poor that they have no choice but to work so they can feed themselves. Without it they would be starving and homeless.
Then there is the thing with pirating, there is nothing for them to do but get with the times. As anime grows so will pirating, they need to find a way to make use of that pirating somehow rather than wanting to get rid of it.
So I could definitely see why the anime industry would collapse in five years if it does. It only takes one of the things I mentioned to do a mistake for the whole thing to crash, like someone balancing on a rope.
I just don't care in general. 
