Why can't multiple deities co-exist

Al-Mu'minun 23:91 > مَا ٱتَّخَذَ ٱللَّهُ مِن وَلَدٍ وَمَا كَانَ مَعَهُۥ > مِنْ إِلَٰهٍۚ إِذًا لَّذَهَبَ كُلُّ إِلَٰهٍۭ بِمَا خَلَقَ وَلَعَلَا > بَعْضُهُمْ عَلَىٰ بَعْضٍۚ سُبْحَٰنَ ٱللَّهِ عَمَّا يَصِفُونَ English - Sahih International > Allāh has not taken any son, nor has there ever been with Him any deity. [If there had been], then each deity would > have taken what it created, and some of them would have [sought to] > overcome others. Exalted is Allāh above what they describe [concerning > Him]. If mere humans can co-exist and co-operate then why can't infinitely wiser divine beings? Even hostile entities like USA and Russia understand the consequences of going nuclear. So if there are multiple godly beings, wouldn't they understand the consequences of unleashing the destruction they are capable of?