Bob,
I'm also not convinced the .338-06 is very popular. Maybe among some rifle loonies, but that's a very different thing than "real world" popularity. The only three I've seen in hunter's hands have been in mine....
Also, I suspect Weatherby was a little bitter after their reintroduction of the .338-06 (after A-Square fumbled around with it initially) fell really flat. Beforehand they asked a bunch of gun writers what they thought of the idea, which is much like asking Hollywood starlets about what cars might sell in Iowa.
I told them it was a fine cartridge, but they wouldn't sell many, which is exactly what happened, though that doesn't mean I know much about the gun business. Many other guys only mentioned the "great cartridge" part.