Brainstorming the stormed minds!

#RandomThoughts Just thinking why don't the companies use the minds of the people on their rolls - their own staff to further the business. Businesses look to inspiration outside, hire consultants and do MBA learnt exercises to get ideas. But fail to take into account the "Captive" minds who think and live the company every day.
To be fair, many companies do strategic sessions and brainstorming sessions but with top executives of the company. So brainstorming the stormed minds. The people who have learnt their wisdom through years of experience would more often than not have a set pattern of thinking. Its the same difference as in a child and an adult. A child's dreams have no boundary but an adult puts unconscious self limits on his dreams too.
What companies need to tap is the fresh minds in the workforce. For crying out loud, how taxing it would be to have a suggestion box, open to all. In fact, the first rule of brainstorming is to speak out all ideas, even if you think they are Stupid!