This conspiracy theory would explain not only success of Rust, but also Go language and C#/.NET, and any other Java competitor.

I'd say it's 90% because of Oracle and its lawyer-driven business, and 10% because the language is just ugly, and existing libraries are super-ugly and unreadable, with all these Factories and AbstractFactories, and all design patterns forced like a religion whether they're useful or not in a specific context.