Why no sway bar

[acrider09]

Im looking at buying a 4 place enclosed trailer and was wondering why no one has sway bars on them like campers. Im curious to see if anyone has them, positives and negatives.

 

[Olddragon]

Sway bar

Most newer trucks have your sway bar and brake control built in.
I have a 24' trailer with a 3' tongue w/sway bars saved me from a bad day coming home from the Mountains, car spun out head on sway bars keep my trailer from jack knife. Would not tow a trailer with out that set-up!!