What if your phone system is poorly designed and only accepts 500 phone calls a minute or it crashes, should there be legal consequences for getting 600 people

What if your phone system is poorly designed and only accepts 500 phone calls a minute or it crashes, should there be legal consequences for getting 600 people to call during the minute? What if your web site is poorly designed so that more than five million requests make it crash, and a DDOS sends ten million requests? Is it okay for the NSA to hack your computer to spy on you because computer software is poorly designed and includes exploits that allow hackers in? What if your automobile is poorly designed in that it can't handle having caltrops thrown in front of it to puncture the tires and cause a crash? All systems are "poorly designed" if by that you mean they'll fail under pressure but this could have been prevented. It would, after all, be possible to design a car that is more resilient to running over a row of caltrops, it would just be expensive and unrewarding most of the time. Of course, the person disrupting the system is a biased party. He shouldn't get to decide what counts as poorly designed in order to excuse his disruption; if you allow that, he's always going to claim that whatever vulnerability he found is just poor design. We don't think this is a good excuse for the NSA; it shouldn't be a good excuse for anyone trying to overwhelm a phone system.