reliability engineering for maintenance

Why are organizations leaving money on the table by not investigating failures that cost them money? One would venture to say that all manufacturing companies have failures each year that cut into their profit. The prevailing question is: What do you do when that failure occurs? Do you simply fix the equipment, get back up and running, and return to whatever you were working on at the time? Or, do you stop what you are doing and diligently try to understand why the failure occurred and put measures in place to prevent recurrence? Is the culture at your facility one that seeks to understand why something failed or is it in a mode where you need to get back up and running as fast as possible? How about your commercial team and management external to your facility? Is there perceived pressure and a lack of understanding that have driven your organization to a place where failures are not fully understood?