Why is lean six sigma on the decline?

It's been a very volatile couple of years for just about everyone and every company, and the world of problem solving and process improvement has not been spared.  That tells me there is a LOT to talk about.  A month or so ago I was at a conference in Scottsdale (yes, of course it was blistering hot--it was July).  On the second day of the event, I kicked things off with a talk about the decline of lean six sigma.  In the room were people from some of the biggest companies that have been at LSS for some time.  Merck, DuPont, General Dynamics, and many others. The first question I asked was, "how many feel like their LSS program is on its last legs?"  75% of the hands on the room went up (I asked, but I was still surprised by so many hands and so much honesty). Then I asked, "how many started out seeking breakthrough improvement, but today feel like they're getting more incremental improvements, like an old continuous improvement program?"  Again, 75%. I'd like to use this forum to discuss the reasons.  Could you and your company be in that 75%?  If so, what happened? If not, what's keeping the energy alive?  There's a lot to talk about, so let's get started...