Alot of time a "hacker" will pick a very specific target, such as someone who has gotten on their bad side or that might have a secrect that they want to know. Another reason is payment many "hackers" do assignments for some sort of payment, the lets say "consumer" might have a certain victim in mind but not know what they are doing so they will hire someone with a little more knowledge to do the job for them.
Hate or Be Hated ; )