Seriously, I think there is a possible future where a macOS-like reactive UI toolkit is developed that compiles and deploys to the web via WASM. Maybe even a compiler that takes something like Xcode's Interface Builder's .nib files (and associated code). Microsoft tried something like that with Blazor WebAssembly. It works really well, but I think a fully data-reactive model like Apple's could be even more successful when applied to web apps.

Whatever the case, I think very few companies have reached the excellence of native macOS interface design in the context of a web app. Figma is a lone exception; for anyone else to achieve what they have, they'd have to reinvent the wheel yet again in so many small ways. (Have you noticed in Figma how moving the mouse down and to the right diagonally from a menu item to its associated submenu does not cause the menu item and submenu to be deselected? That detail, and so many others, are straight-up macOS-inspired UI craftsmanship.)

We need a reusable toolkit that lets ordinary developers achieve Figma-level UI excellence in web apps.