The thing is, "genius" doesn't scale. At some point, if you want to scale production up, you'd need more people. And most of them won't be geniuses, they will be normal people, in the very literal sense of the word "normal": they'll be somewhere in the middle of the bell curve on most of the parameters; and even the number of parameters in which they're outliers too will be in the middle of some bell curve. So either your tools and processes accommodate normal people, or your company won't make it. Heck, even if you somehow manage to gather together 10 geniuses, it's a (biased) coin toss whether they'll work together productively.
And that means you will at some point arrive at systems (and organizations!) that nobody comprehends in entirety. At this stage you can only hope that those systems managed to grew up resilient, that is, that they can be maintained, repaired, and extended on a piece-by-piece basis. Sometimes they can't be (cf. most government departments/small-to-medium businesses at the latest stages of their life cycle), so they collapse and are (eventually) replaced by something else. Sometimes it turns out that the organization that had collapsed was your whole civilization and now you're in the the Dark Ages. That sucks, but the only way out of the Dark Ages is gradually building up a new complex system, and while it will start from a small and seemingly perfect new way to run things, it will eventually, grow large and incomprehensible in its entirety—if it doesn't, it will be supplanted by the one that can grow so, there is really no escape from this.
[0] https://yosefk.com/blog/my-history-with-forth-stack-machines...