To be honest, I get a bit bored about the mantra that design thinking will solve the problems of large corporation. Well, when I go through the case studies at Ideo I am extremely impressed by their client list but not about the output. I have seen several design thinking sessions and I am not impressed at all with the output. The results are very often: More-of-the-Same but with fancier design.
Where is the invention from design thinking that changed the industry? Where is the iTunes or the Kindle of Ideo? The problem with design thinking starts very early in the process with the problem definition phase. And that is where large corporations fail. They define the scope too narrow and than you get nice new things that sustain your current business but not new business models that rock your industry and yourself.
Ideo is a very good (self-) marketing & design firm but not an industry rocking firm. Large firms just love Ideo because Ideo just offers such a well designed process to solve the big problem of “being not innovative”. You hire Ideo for comforting yourself for not using your own common sense and your own customer insights. You just outsource your understanding of the customer to Ideo.