You need a CEO who actually understands the business. If your business is building planes and your CEO has never built a plane, then your business will inevitably have problems because the CEO fundamentally doesn't understand the business.
It won't happen immediately but a slow rot will set in. The CEO won't pay attention to the details because he never understood the details in the first place.
Optus recently had a major network outage. Part of the reason why that happened is they picked a CEO with no telecommunications background. She fundamentally didn't understand the business she was in:
https://edition.cnn.com/2023/11/07/tech/australia-optus-netw...
She's since quit as Optus CEO in an "I don't want to fix my own mess" move. She doesn't seem to have paid that much attention to Optus anyway:
https://www.afr.com/rear-window/optus-a-part-time-gig-for-ce...