I think a lot of employees feel that since their company have a great website, a great product, a great business, they conflate it as their own and that 'anybody can do it'. In fact they have only done a tiny portion of anything themselves. It's not until they get thrown out on a blank canvas they'd learn to appreciate how hard it is if all they have is their own pair of hands.
Unfortunately the people interviewing are often going to be life-long employees that are expert of climbing the corp ladder, not so much the entrepreneurs who found and own the business.