The funny thing is: Izanami was built to force the opponent to change his ways. Imagine if it wasn't and it just plain trapped the opponent into a loop forever?Izanami reminds me of Doctor Strange, Dormammu and the Time gem.
Imagine being stuck there forever.
I also love how Itachi was still able to genjutsu Kabuto into performing the Edo Tensei Release seals while he was still under Izanami.