Why D is not popular enough?

[Emre Temelkuran via Digitalmars-d]

It's easy to understand conservative programmers, you can even 
use C++ for web programming but it's waste of time and it won't 
give you the performance of Dropoid toolkit for Java. Also it's 
reliability is depends on your skills. Everyone leaving lower 
level languages other than the internet of things and game 
development industry. I noticed that, there was no significant 
progress on software industry for tens of years until higher 
level languages came out.