Thoughts
I don't understand why no one wants to invest in a universal application that can open any file. It is the future, it is going to happen.
There are extensions for VS Code to let me open and edit Excel files. I can almost use VS Code as a browser (there are extensions for it but these seem really bad.) Sooner or later someone is going to create an application that supports plugins to open any file type, and it is going to be incredible.