system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Why don't Jedi use their powers in unison more often?

Jedi and Sith have been shown to be able to work together to a certain degree by combining different force powers, or the same powers to more devastating effects. 

In the Darth Bane trilogy, several Dark Lords working together were able to strip the life from a planet via the Thought Bomb. 

In Clone Wars, Anakin, Yoda and Ashoka work together to find force sensitive children before they can be kidnapped. 

So, why don't Jedi use their powers together more often in combat situations? I imagine that if the Jedi had been using their powers together on Geonosis, they'd have torn that arena to shreds, along with a majority of the droid army. 

According to Wookiepedia, the Geonosis Strike Team consisted of 212 Jedi of varying degrees of skill, but evidently competent enough to be put in such a dangerous situation. Surely, that number of Jedi in one place would be devastating for any army, and they should be ripping ships out of orbit with that amount of accumulated strength, right?
gpt
The Jedi do not use their powers like the Sith do, and there is your first mistake.  Jedi often use there powers in concert with one another, but not in an offensive matter like the Brotherhood of Darkness' thought bomb.  Instead, Jedi use the force to manipulate the world around them for the purpose of ***preserving natural life***, as seen by Anakin, Yoda, and Ashoka's work in finding and saving the force sensative children in TCW.