This simple thing is what evolution is all about. Some animals and plants die off and others emerge to take their place in a never ending evolutionary cycle that has gone on for millions of years.
The one sole reasons there are organisations with a vested interest in keeping plants and animals on the brink of extinction in the public eye is one of money. These organisation get millions every year to tell you, the glorious public, what we all know already.
In the end everything comes down to money and the more interested an organisation has in that something the more they force feed the general public with information.
This sort of brink of extinction is nothing new and has gone of for millions of years. It is quite simply evolution at work.