Have you been locked out of an account due to entering the wrong password too many times? That was rhetorical; unless your password is "password" (and it better not be) everyone has managed to lock themselves out. Even someone using "password" can manage it if they don't realize Caps Lock is on. But here's the real question - why don't hackers get locked out when attempting to get into their victim's accounts?
If you've been watching USA's new serious Mr. Robot you might be under the belief that, like Elliott, hackers research you and then using a well thought out plan they try passwords that include information about your birth date, family, pets, sports teams, nicknames, address/phone numbers, etc until they find the magic combination to your password. That scenario doesn't hold water when you look at the facts of an account lockout - it doesn't matter if it's you or a hacker if the lockout says 5 tries and you're locked out, that's what's going to happen. Even the few variables listed above amount to thousands of options.
So how do hackers do it?