Stealing doesn't create capital. It moves it. Your points 3 and 4 also indicate you don't seem to understand the difference between creating capital and moving it.
As for buying and selling stuff for a profit, you may not be producing stuff with your own hands, but you are enabling more production to occur.
As for buying and selling stuff for a profit, you may not be producing stuff with your own hands, but you are enabling more production to occur.