[coldtea]

You are overthinking it.

D had a "version two" new compiler issue, and a "let's rewrite basic libraries" issue that split the user base.

They are also bad at marketing (and no match for Google's visibility -- they don't even have a maskot, IIRC)

And they still lack some basic things to this day, including a way to go from download to compiling your code in a minute.