I did WO/EO for several years until 2001 including the USPS Postmaster app, and it was incredibly productive. This was before JS took over everything, but I can't ever recall being able to do so many client/server web apps with so little effort. Sure the tooling was sometimes lame (ProjectBuilder was a precursor to Xcode) but Objective-C at the time was amazing compared to all other web programming languages. I think WO was far easier to develop in than today's complex web stack, but clearly serving the simpler need of that time. It wouldn't be useful today.