There's no such thing as safe medications, even if they are already available OTC. For instance, even "benign" OTC medications like ibuprofen can cause GI bleeds or acute kidney injury if used inappropriately. And before you say such side effects are rare, come spend a day to shadow in gastroenterology or nephrology clinic and see for yourself.

If it comes to the point where all medications can be purchased OTC, this will create an even larger health gap between the rich and the poor. I can 100% assure you that our rich population will continue to pay to see us doctors, while the poor may try to self medicate in order to save a bit of money, but in the long run harm their own health.