There are certain drugs that got published about in a way that makes them unpatentable. Even though they're super promising, they just don't get developed because who would develop? If it's not a synthetic chemical, if it's already available in nature, they probably can't patent it. Some synthetics can't get patented because the information was already released and so now it's part of the commons or after the patent life on a drug expires. We need to look for a new thing in that space even if the new things are not better or even shittier than the previous things simply because we just cannot make money doing that.