I agree with most of what you're saying, with the caveat that you're talking about a fair bit of curating of collections. Some people will do this, particularly those with the technical skills to be able to do so. Some people will not do so. For that latter group, the print book is far more likely to outlast the ebook.

It is also worth considering that print books last considerably longer if they are properly maintained too. Even meager environmental controls (e.g. storing books in a dry, cool location) will do a lot to prevent the common forms of damage. Sophisticated enviornmental controls (the costly stuff that requires a fair amount of technical skills) will preserve a physical book a lot longer.

Bluntly put: properly maintained ebooks will be able to last longer than print books, but we won't be discovering long lost ebooks a thousand years from now like we did in the Renaissance.