RPGs have never recaptured the popularity that they enjoyed in the early 1980s.
It is unclear whether d20/3E DnD was as effective at 'reviving' DnD as many had hoped.  (It has been argued that a less costly and rules-heavy alternative would have been more successful.  I am not sure about this, so if anyone has some hard data about the success/failure of the d20 'revival', please feel free to share it.)
There have been many recent reports that a number of game companies have left the RPG, or at least the d20, market.  Others are reducing their RPG/d20 focus.
Many "out-of-print" RPGs are available for very little money as pdfs.  The SRD is free online, as are a number of other "in-print" rules-systems (e.g. GURPS lite).
The internet supports many communities that produce free material for both in-print, and out-of-print, RPGs.
Soon it will be 
very inexpensive to print and bind books for individual use.  
All this makes me wonder: has the RPG industry a future?    
My prediction: by 2014 there will be no RPG industry.  Okay, maybe 2024.  Sure, RPGs will still be around, and perhaps even doing reasonably well.  But no 
industry.  Everything will be fan-supported and free.
But I am only one person (at least when I remember to take my medication).  My epistemic resources are limited.   I could very well be wrong.
Thoughts?