system
Given the following post, respond as if you're commenting on Reddit:
human
Why doesn't dark matter collapse together to form black holes?

If they aren't really interacting what force is stopping their collapse?
gpt
Ignoring any interactions, a cloud of gas of either normal or dark matter will not collapse so long as the gas has sufficient thermal energy (i.e. random motion of the particles) to maintain equilibrium with the gravitational potential energy of the cloud.

If a non-interacting cloud is too hot and/or not dense enough, it will simply disperse. If it is dense, cool, and massive enough it will undergo collapse.

With normal matter, the electromagnetic interaction helps collapse to occur, as heat energy is radiated away in the form of photons. This may cool a cloud of gas as it collapses. In this regard dark matter may be less prone to collapse than normal matter, as there may be no interaction which will produce a substantial amount of radiative cooling.

So as long as an effectively non-interacting cloud of dark matter is not overly dense, massive and/or cool, gravity will not overcome the gas pressure and it will not collapse.