I think there is another article waiting to be written, why ReStructured Text lost.
I know that in my younger years I would get a lot of flak for converting .rst files into .md when I joined projects.
(As I got older I just stopped seeing .rst that much)
I love reST and I think it lost primarily because of distribution. I.e., the people using it did not have large audiences and didn't put much effort into promoting it.
It's a shame because reST is almost as easy on the eyes as Markdown and is much more capable without being too much more complex.
rST is still fairly popular in Python circles, especially for anyone using Sphinx.
> I know that in my younger years I would get a lot of flak for converting .rst files into .md when I joined projects.
Why would you do that? Seems terribly impolite to join a project and start breaking things...