Ask HN: What prevents the following vulnerability I found from being exploited?

I've now consulted ChatGPT on a solution for a vulnerability which I even filed a patent for long time ago and I feel less stupid right now.

Say bank.com has SSL. Cool! Now how does Angular work? You visit angular-site.com/some/path and backend server rewrites the request to angular-site.com/index.html. You still see angular-site.com/some/path. And it works and that's how Angular servers that serve Angular apps work.

Now, what prevents bank-malicious-url.com from acting like a viewer, where it access bank.com when you visit it hence the SSL encryption/decryption is made between it and the legit bank.com, whilst malicious-bank.com url has a simple letsencrypt certificate that is showing you a not so legit green secured URL web address on the top of your web browser?

Please help! I abandoned my patent, I've been building my Angular web app and now I think that the old me was not so dumb after all. Where to proceed from now?