In the 1970's, it took a warehouse full of equipment to run a computer at 1/100th the speed of even a cheap smart phone in your pocket right now.
It has not even been 100 years since the discovery of antibiotics
200 years ago they were still using blood-letting as a treatment for just about anything
Less than 20 years ago, dial-up modems were the common way to access the internet at painfully slow speeds
Moore's Law has accelerated the digitization of our world beyond what even Bill Gates and Steve Jobs could have dreamed of
You cannot predict the future of medical technology. Research into Parkinson's, strokes, and other brain disorders has advanced a great deal in the last 15 years. Even if there is not a directed research effort to cure tinnitus, it is more than likely that other advances for a variety of brain disorders will unlock the key to treating and curing this disease.
On a side note, perhaps you should have a little faith in your fellow man, and even help initiate the process of advancing research. People use to feel helpless about heart disease and diabetes even in my lifetime, and now look how far we have come? It's fantastic.