Why isn't Rev more popular?

[Mark Swindell]

What is the main reason (if there is such a thing) that Rev is not  
more popular among professional developers/programmers?  It's been  
around awhile now.  People have had a chance to hear about it.  It  
has garnered some awards, at least on the Mac side.  On the face of  
things you'd think it would  be more popular.

Just curious to hear what people think.
Mark