Companies still reject innovation from outside

Much is made of open innovation, but it is found far less often than it is claimed. Most large companies remain closed to new ideas from outside, even those that boast about how much they seek it. I have seen many times in the past few years that companies do not simply reject ideas, but more worrying still, are unwilling to even listen to new ideas. It is ironic that the same person who calls for more externally sourced ideas the same day refuses to listen to one which has been proposed in response to the call.