Wow! for once I never thought of it this way but from the narration in vid, you are damn right. These companies don't want to invest in the knowledge that of the workers. they are more like having the agenda to change workers frequently from time to time, clearly before the workers sees the full length to understand the business in depth. I believe it is for this reason you see a man work for a company, be it big or small, for over 10 years and when he gets sacked, he becomes frustrated about what to do with his life as it will always seem like he has gathered no atom of knowledge whatsoever in those past years.