Minnie Mum, I agree with much of what you say. except all the industries you mention DO in fact share extensively.
All of the businesses you mention share a common currency, $. They also all share standards of measurement, standards of training, and legal standards, among many other standards.
Apple forged a major partnership with IBM this past summer, and they have partnered multiple times before. Sounds like sharing to me.
Apple iPads use standard electrical outlets =sharing. Gigabytes? A shared idea. Binary code? A shared idea.
I seriously hope my investment advisor is trained and certified, and that he abides by shared legal standards.
Dinsey and Universal very much share ride platforms.

Primeval Whirl, a.k.a. the Wild Mouse) is a standard coaster manufactured by Reverchon. Universal's Rip Rockit is manufactured by Maurer Sohne, which also makes
Disneyland Paris' Crush's Coaster. EE is manufactured by Vekoma,
maker of 288 coasters operating worldwide, including Universal Singapore's Battlestar Galactica.
Chefs are no different. I mean: beef, fish, poultry, flour, butter, eggs. V&A lists Galilee Osetra Caviar. I'm pretty sure that's the same caviar I can buy online from Dean&Deluca, otherwise why would they list the brand name?
I'm confident V&A's 'Duck A l'orange" is based on the traditional recipe. According to legend, it was an Italian recipe in the Middle Ages before it migrated to France in the 1500's via Catherine de Medici and her entourage. Sounds pretty far from an original recipe created at V&A.
OP, try subbing the term "carmelized" for the inflated term, "roasted" and you'll get multiple recipes for white chocolate gelato. chocolate Timbales are also called "bouchons." no promise you'll find the EXACT recipe V&A uses, but you can likely get something imperceptibly close with a little effort. The one thing you won't maybe have is the exact kind of pan V&A uses, and the pan can make a big difference. Cakes cooked in cast iron muffin pans taste very different form aluminum pans. Animal fats usually taste better than vegetable ones. It is telling that the Timbales aren't listed on the VA vegetarian menu. Sometimes the great secret ingredient chefs use is just good old fashioned lard of some kind. It's cheap, and guests don't want to know. Maybe that's exactly why they don't want to share the recipe!