In what way does taking money from one group of people in order to give to another "take from the economy"? If you have two bowls an two apples in one bowl, and then move one apple to the other bowl, then you still have two bowls and two apples. Nothing has been lost!
The first bowl is disappointed because it has just one apple, but the second bowl is elated since now it has an apple too!
Our economy is full of intermediaries, who take a share of each transaction without adding any value. But this is how it should be since otherwise those useless people would not have jobs!