I was having a discussion with somebody about organ transplants. I gave the free market pov that allowing the sale of organs would greatly increase the supply, and the all-in price would come down greatly if everybody knew that they (or their heirs) could profit by making their organs available (it might even encourage a few people to adopt a healthier lifestyle in order to not destroy a valuable asset, and maybe encourage businesses - like financial middlemen - to get into the game).
The person I was discussing with agreed with the argument -- in theory -- but countered that it was unfair that a rich person would have a better opportunity to get a transplant and that, indeed, a poor person's best (and maybe only) chance was to use the current lottery system.
My question -- does anybody know an example of something analogous to human organs whose supply was controlled, whose cost was extremely high and supply very low, and then became available on the market and as a result became readily available because of increased supply and/or lower price? My one possible answer is the abolition of rent controls. I was hoping for an example that was more understandable to my friend. Perhaps certain items that were, by law, exclusively available to the aristocracy in the past, and that later became something that everybody was able to afford.