This is quite true, I think.  We may have just started along the Plateau and could hang there defying gravity for a decade or so.  Things may only speed up once there is general awareness of what this Plateau really is.  

At this point, we may speed up towards the end of the Plateau due mainly to protectionism (nationalist hording of resources - i.e. what I think Russia is currently doing).  If this gets out of hand, then this period of "suspended stability" could end sooner than later.

additionally, while production/extraction may platea, demand will not.  exponential growth in emerging markets (as if china and india are merely emerging) will also shorten the plateau, or stated inversely, cause the inevitable decline to start sooner.
-PoP