They offered their readers mere 'rules of thumb'. Publishers, today, demote the Public even further, exchanging the 'reader' for the 'viewer' of books like S,M.X,XL, where text is used like hairspray to fix the Deleuzian 'felted graphics' into place. I imagine that Corbusier became depressed late in life as he saw his ideas give birth to huge architectural consultancies, all around the world, that used devices that he himself had reduced to mere advertising jingles, like 'piloti', 'brise soleil, 'plan libre', 'toit terrasse', 'machine a habiter' and 'fenetre en longeur', while he himself was ignored by Clients. It must have irked him to see his formal recipes rubbished by Architects who never had the capacity or the desire to understand Corbusier's complex and extensive architectural culture. No wonder he walked into the sea and never came back.
Amphibian evolution is mostly one way.
The fault was entirely Corbusier's. He only published his 'hardware codes'. He refrained from advertising his intellectual 'software'. With hindsight, and seeing the paucity of Corbusier's actual commissions, it is obvious that he had nothing to lose. He would not only have done a service to Architectural culture by being more intellectually forthright, but, who knows, he might even have found better Clients.