Yes, that's why i said that this is a very good approach, and healthy approach as much as it takes, i add now. Still your company though, not the workers company, aka your benefit. 
About the risks, a worker can even lose his life due to the job. Is there a bigger risk? Risk, in general, is not an excuse for stealing the workers by keeping the surplus. I am telling this, because this is why risk is involved in such conversations, it was invented as an excuse during the cold war as an effort to justify the theft.
No, it is not possible in many cases and  for many reasons, for a worker to start it's own business, but yes , on the other hand there are many cases that workers can make their own business or cooperate with others, but they don't do it usually for the exact same reasons you already mentioned. So, it depends on the case, you can be well right with your criticism on this, i certainly can agree too, but not a general rule. Far from that.