Because computing power is a lot like knowledge, we will never have enough or satisfy the demand for it. These new chip architectures will allow new forms of computing devices as well as a host of new applications. Defense, aerospace, medicine, communications, consumer electronics, etc....
If you can create the processing power then someone will create the application needed to run on it.
There are no applications that need more processing power except human to machine direct interface and more human like robots.
I do not want to go there.
Machines are supposed to serve man, not to combine with or replace man.