Imagine for a second that our world was remarkably static.
No new products or services would ever be created, largely because no new consumer demands ever arose. Demographics & desires... demand & supply -- all unchanging. Companies wouldn't be competing with each other through new ways of advertising, innovative distribution systems, and improved production methods, so they'd all have settled into whatever slice of market share they'd captured back in the days when things were more dynamic.
In such a world, incumbent companies in any given industry would, I suspect, be very hard to push aside. New companies and new solutions would be rare, if not nonexistent.