I'm sure it is not a new thought but I haven't heard discussed what would likely have happened in WWII had Hitler not been consumed by the 'need' to eradicate the Jews and other "undesirables". It must have been very expensive to allocate all those resources to that pursuit, money that could have been used to fund the war.

Had he not singled out entire peoples to persecute it is highly likely he would have been supported by many of them.

And if Hitler had not opened a new front to the war when he entered Russia...

Would Germany have won?