We likely wouldn’t have yacht or beach if Walt was around. Walt wasn’t about resorts either, he was about the parks, technology and innovation. Epcot would’ve been an actual city had he lived longer.
I really would have loved to have seen what EPCOT looked like if Walt had been able to do what he had planned. I'm not sure if it would have worked but hard to bet against the guy and it would have been very interesting to see regardless of if it worked or not. EPCOT is definitely one of those big "what if" questions. We see a lot of mixed-use type developments these days but that could have been one of the first of them but in a very different way.