Doesn't that simply mean that the customer loses connectivity, just as the attacker intended, for the duration of the attack? From the ISP's point of view, you

Doesn't that simply mean that the customer loses connectivity, just as the attacker intended, for the duration of the attack? From the ISP's point of view, you might have prevented an overload that could have affected other customers. From the customer's point of view, their service was denied all the same. Doesn't sound like anything has improved compared to 10-20 years ago.