Re: They think they are gods..
I wonder how much of he siloing and stuff is partly due to senior managers (c-suite types) having come up through the fashionable "management is a unique skill and you don't need to know anything about the product" system. It seems to foster a view that sees the whole as just being a sum of the parts- to be assembled elsewhere - which may be true for some things, such as say a car. But is useless when the product is a one-off and the parts need to be fitted together during the process.