The 10-15 year timeframe for drug treatment is, I think, a pessimistic timeframe.We have to be lucid, the hair cell regenerating drug won't be on the market for at least 10 or 15 years minimum.
Neuromodulation could be a good alternative to relieve us while we wait for the medication, but indeed the side effects are not negligible; the most terrifying being trigeminal neuralgia.
Knowing that many companies are already well advanced in their trials.
10-15 years is the time it takes for a drug to be on the market from the discovery of the molecule. In our case the molecule(s) have been discovered for a long time.
But I agree on neuromodulation, I think it is the most promising treatment.