As I said above, Dropbox's real competitors (Microsoft, Google, Amazon, Apple, Box) all follow a similar approach and don't use E2E. The ones you mentioned are very niche.
The technology just doesn't exist to give users an equivalent experience with equivalent features when using E2E. I wish this wasn't so but it is.
HTTPS is transport layer encryption that goes seamlessly over HTTP and doesn't change anything at all about what you can do online. With E2E giving users collaborative folders, shared links, online browsing, password reset, etc while still providing zero knowledge encryption is a huge technical challenge. If you're doing decryption locally in the browser you still have to trust the company not to just add some JS to siphon off you decryption key at any moment.
I really do want to live in a world where E2E is in more places, but with cloud file solutions there's just not a way to do it right now that gives people the features they want and the market share of these companies is showing that.
The technology just doesn't exist to give users an equivalent experience with equivalent features when using E2E. I wish this wasn't so but it is.
HTTPS is transport layer encryption that goes seamlessly over HTTP and doesn't change anything at all about what you can do online. With E2E giving users collaborative folders, shared links, online browsing, password reset, etc while still providing zero knowledge encryption is a huge technical challenge. If you're doing decryption locally in the browser you still have to trust the company not to just add some JS to siphon off you decryption key at any moment.
I really do want to live in a world where E2E is in more places, but with cloud file solutions there's just not a way to do it right now that gives people the features they want and the market share of these companies is showing that.