What can be done to convince pharmaceutical firms to lower prescription drug prices?

When the news broke that Martin Shkreli, now the former CEO at Turing Pharmaceuticals, decided to increase the price of the life-saving drug, Daraprim, from $1,130 to $63,000, it made headlines all over the world. A price increase of more than 5,000 percent is probably not justified by high research and marketing costs. More likely