The operators of said technology need have to eat, sleep, and breathe. Aliens win a battle of attrition eventually.
No animal is born with enough cunning to ambush everyone around it in a hostile environment and survive against all odds (even after being born just hours ago) via cutting power, lights, using their own blood to manipulate the environment, learning how ventilation shafts work and so on.
Aliens don’t display a traditional kind of intelligence. There’s a reason they’re referred to as the perfect organism. Not sure if the intelligence of each individual alien depends on the host (kane’s son understood the layout of the whole ship and easily picked them off) but they’re not zombies, they adapt and overcome however long it takes.