The same problem can actually occur at a later stage, too
Like when you need to make some sort of "generation change". Like when the first generation of engineers leaves, but has left a mess for the next generation. In such situations you are unlikely to be able to attract and/or hold a "next generation".
So if you look at a company, try to find out how sustainable it is. Try to look into the internal infrastructures and try to find out how easy it is to maintain it. Creative Chaos can be a very good thing, but when its interpreted as "look for the most current version of the business critical VBA code somewhere on 10 possible workstations and paste it into your spread sheet", it's not.
This is a real danger for not to large companies.