system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why doesn't the Sandman just suffocate anyone he fights?

He could so easily just surround someone in sand, harden the sand, and suffocate them. Why doesn't he?
gpt
This is actually one of the very first things he tried against Spider-Man.  It didn't work.  Not that it isn't a valid tactic, but the people he's normally fighting are typically more than strong enough to break out of such a hold, and while Sandman *can* affect his density, he's not Concreteman or Steelman or anything like that; he's Sandman.  The move would work great against your average bank guard, street cop, or mook, but Flint Marko's main opponent is a guy that bench-presses Hummers as a warm-up.

He can only get so hard.