No, changing this breaks the world. A huge fraction of PyPI becomes completely invalid overnight, and the rest fails the expected version checks. Not to mention that the language is fundamentally designed around the expectation that modules are singleton. I've written about this at length before but I can't easily find it right now (I have way too many bookmarks and not nearly enough idea how to organize them).
Yes, you absolutely can create a language that has syntax otherwise identical to Python (or at least damn close) which implements a feature like this. No, you cannot just replace Python with it. If the Python ecosystem just accepted that clearly better things were clearly better, and started using them promptly, we wouldn't have https://pypi.org/project/six/ making it onto https://pypistats.org/top (see also https://sethmlarson.dev/winning-a-bet-about-six-the-python-2...).
Yes, you absolutely can create a language that has syntax otherwise identical to Python (or at least damn close) which implements a feature like this. No, you cannot just replace Python with it. If the Python ecosystem just accepted that clearly better things were clearly better, and started using them promptly, we wouldn't have https://pypi.org/project/six/ making it onto https://pypistats.org/top (see also https://sethmlarson.dev/winning-a-bet-about-six-the-python-2...).