As much as technologists like us wish we could prioritize efficiency and use the latest and flashiest tools all the time, that's just not practical. When you say you want each company to have an objective set of technical requirements when choosing a toolset, you also have to have a set of practical requirements. What is the cost of friction of adding a new tech stack to the company?
Adding electron means just learning electron. Adding Tauri means learning Tauri and Rust.
It's like the saying goes, "the best camera is the one you have with you". It's true with any business decision.