part 107 commercial license

Whats the advantage of getting the 107 ? Lets say a friend want his crops pictures, you do it for a fee without having your 107, the transaction is between you and him ? Wheres the harm, and it brings more work your way w/o advertising what happens ?

Anyone on here with insight on how to go about getting the Canadian equivalent to Part 107. It seems very confusing after looking at the Transport Canada site. I have a bunch of people asking me to do some work for them but flying is so **** limited without permission from authorities. Any...