Technology

the obvious answer is that people weren’t buying them enough and that capitalistic markets will not support niche products that serve smaller demographics unless they can either financially justify themselves or earn some kind of government subsidy to sustain the effort (eg for a medical device and even then it’s shaky)

There are thousands of cool things that have died because they weren’t financially viable. That is what it is, but what’s more frustrating is that the technology behind these items and ideas is then almost always kept under lock and key forever, lost to the ages, because of the sliver of hope that some portion of it may somehow become a part of some new project. Instead of sharing the information to allow for collaboration and building on what was already established, any future projects need to now start from scratch. Otherwise they may infringe on the creators ability to secure earning potential you see, and that justifies drastically slowing the development of human progress in all fields by obfuscating research everywhere