No, because ultimately security isn't binary. If you can increase the cost to the attacker, that raises the bar for attacking you and reduces the number of potential attackers. And over time security practices do get generally better, raising the tide for all boats; the problems right now are that we're still wrestling with the legacy of foundational systems designed in a pre-internet world where constant adversarial networking was not the norm, and more generally we keep increasing the attack surface by adding new things to the network. But once we have software/hardware stacks that have all been designed in a post-internet world (yeah, it'll take a while) and once we've finished networking everything that could reasonably be networked, there's hope enough to suspect that it will be possible to close the security gap to all but the most determined adversaries.