Dr Ed
Once apon a time (1977), most hearing loss people (those over 60yrs) were born before 1917. They were totally unfamiliar with electronics and computers were in those days monsters made by IBM. There were virtually no consumer protection laws or local consumer protection Agencies. Using the then many scamers preying on these people as a reason, some hearing professionals succeeded in geting the FDA (Not the FTC) to classify hearing Aids as Medical Devices.
This allowed local state lobbies to promolgate restrictive laws restricting sales to only those licensed by the states. (Circumvents Restraint of Trade provisions of the USA Constitution).
Prior to 1977 most professional medical organizations considered sale of aids (merchandise) by pro Audiologists as UNETHICAL.
Today more and more HOH are familiar with electronic devices and are computer literate. And the technology has vastly changed. Self programming is practical for most types of loss. (Think outside the box of the present designs).
There is no medical or technical reason for aids not to be sold over-the-counter in drug stores and by the mass merchants. Aids would then cost $100 to maybe $500 or so.
But those with serious losses would still be better off with a pro exam. Just my opinion…
Ed (not Dr Ed)