basic economics: money circulates.
you spend a $100 on a matress, matress saler is $100 "richer", matress guy buys a tv for $300, tv seller is $300 richer, tv seller goes out have a nice dinner for $80 and restaurant cook is $80 richer, restaurant cook has a tooth ache, you are a dentist, you fix him and you get $200more.
the point behind all this nonsense? the fact somone sells something and somone buys something does not automatically make the buyer and/or seller poorer or richer.
Thats not the same as saying that a big company cannot be blamed for making people poorer, not at all. A company can come into a poor country, take advantage to exploit the countries' wealth by taking advantage of cheap labor and or buying "cheap" materials. However, even then you can argue that those pennies the company pay the "slave workers" are making them slightly less poor.