We restrict children for good reason, often to protect, teach or even to confine. They, in response, push the boundaries as they should. They learn why the limitations exist, and they also know how to be creative and resourceful to potentially overcome the limits. In some situations, pushing the confines is not advisable or acceptable, but this will only be learned when you tug at them a little.
Organizations do impose boundaries, again for good reason. If we seek progress and growth, we should expect challenges and push the limits. Failing that we remain where we are, and soon enough we are left behind. When we look beyond the confines and the acceptable we begin to see new frontiers, and it only then that we can begin to innovate.