Industry standards are not platform standards. React (enabled by Inertia) is in many ways is an industry standard for building UIs on the web today, yet it's not part of the platform. Same with Vite, it's the standard way to bundle on the web.
Decidedly, Import Maps are not used as a standard for dependency management in the web dev industry.
Funny you should list those out. JS Import Maps (https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...) are literally an industry standard while Inertia and Vite are decidedly NOT standards in any way, shape, or form.