According to Wikipedia, an American producer wanted to do a Battle Royale remake.
Then the internet went “wtf no” and it got shelved.
And then The Hunger Games came out and…
In March 2012, Roy Lee reported that a remake of Battle Royale would no longer be possible due to the release of The Hunger Games, stating that “Audiences would see it as just a copy of ‘Games’ — most of them wouldn’t know that ‘Battle Royale’ came first. It’s unfair, but that’s reality.”
People might think an unnecessary, probably whitewashed, Americanized adaptation is unoriginal.