10,000ft captchas

Every time I use Gogo inflight, I’m puzzled by their use of captchas. Are hackers bored enough on flights to try to circumvent their authentication system? There are gazillion other and more consumer-friendly ways to solve that problem like introducing progressive increasing cool-off periods after failed login attempts.

They even let you solve a captchas for accessing Delta’s free inflight messaging service which doesn’t require an account. I’m very puzzled by this.