<discussion ref="http://www.ebizq.net/blogs/ebizq_forum/2010/03/has-bpm-evolved-to-a-point-where-only-incremental-improvements-can-be-made.php" />
I think that BPM (discipline + tools + your enterprise system) is an enabler for evolving the business at the business pace. In a properly architected BPM system, it is easy and cheap to introduce small improvements; also the risk of big changes can be mitigated by some simulation.
I saw projects in which BPM was “eclipsing” a production system and I saw projects in which BPM is the core of a production system. The general conclusion is that the business and the IT (and sometimes a BPM vendor!) do not know yet how to use all power of BPM.