What's the biggest "What if" in music that didn't involve someone's untimely death

I think talking about someone's death in music is such an easy "what if" that we can talk about for hours (Buddy Holly, Hendrix, SOPHIE, Amy Winehouse, etc. etc)

But what moment do you think in an alternate universe would've had the biggest impact on music as we know it had something slightly different happened

Personally I think had SpaceGhostPurrp hadn't burned his bridges with RVIDXR KLVN and A$AP Mob, he would've been a generational producer/tastemaker in hip hop