The biggest thing that R has is just an incredible amount of really well documented packages, that are quite frequently cutting edge (unless you want to do any

The biggest thing that R has is just an incredible amount of really well documented packages, that are quite frequently cutting edge (unless you want to do any deep learning work). Not to mention that the base R has just a tremendous amount of useful stuff baked in. I've kept an eye on Julia and would love to use it in my everyday work, but also know that for now that's just not possible because of how many built-in functions and packages I rely on. However solving this is just a function of time and community (Julia just needs their Hadley Wickham). I remember when people scoffed at Python because it has nowhere near the ecosystem that Perl did.