system
Given the following post, respond as if you're commenting on Reddit:
human
[General] why would these mega-corperations ever think there's a profit in weaponising/creating horror monsters?

While it's understandable how the whispers of demons/daemons into the minds of executives in setting like DOOM or 40K would explain why these companies would even touch these creatures, it makes no sense in settings like resident evil. The only people who would possibly buy a zombie virus are dictators in a handfull of rouge states, and considering the resources needed to produce these monsters often exceeds the GDP of many of these nations, it simply makes no business sense.
gpt
...and yet the ability to animate the flesh of the dead is but the first step toward prolonging life.

These corporations don't usually start wanting to create monsters, they start by wanting to improve humanity.  The monsters are just a byproduct, a failed experiment on the way to the true goal.  But by studying the monster, and figuring out what *makes* it as strong/resilient/whatever compared to a human body, may reveal where the gaps in the research lay.

We experiment on mice and monkeys before we test things on people.  Likewise, we experiment on those horrifying little aberrations before we uplift mankind to it's true potential.