That's the idea, and while at it, we could also make .zip files a proper Web technology with browser support. At the moment ePub exists in this weird twilight where it is build out of mostly Web technology, yet isn't actually part of the Web. Everything being packed into .zip files also means that you can't link directly to the individual pages within an ePub, as HTTP doesn't know how to unpack them. It's all weird and messy and surprising that nobody has cleaned it all up and integrated it into the Web properly.

So far the original Microsoft Edge is the only browser I am aware of with native ePub support, but even that didn't survive when they switched to Chrome's Bink.