More than 4 decades later, none of the other manufacturers come close to Toyota still. Why?
Because the change is one in how you understand the world. This is really hard to do, particularly as an organisation. It needs to reinvent yourself from scratch. It means killing your org to live again.
The org will fight it. People that were favored will lose power and standing. They will fight it. Things will get worse before getting better. They will fight it. It will need different way to count success. That will be used against it. It will need new way to trust. They will say it is laxist.
Said otherwise: the current structure work good enough. There is not enough reward and competitive pressure to make the huge opportunity cost of change an accepted strategy.
You can apply that model of change infinitely. Ask yourself why we have not seen huge swath of the web move into Elixir as an example.