I would take it a step further and say that server-rendered JavaScript apps completely changes the game and will have ripple effects throughout the web industry

I would take it a step further and say that server-rendered JavaScript apps completely changes the game and will have ripple effects throughout the web industry. Here's MercuryJS's example of server rendered app: https://github.com/Raynos/mercury/tree/master/examples/server-rendering https://github.com/Raynos/mercury/tree/master/examples/serve... As you can see most of the code is the client-code. All the server code does is run a function and stringify the results. What this means is that you no longer need a back-end team and a front-end team. Your front-end team is your team (not counting "API" teams). Sure, some companies have already been doing this but now you can do it with far less code. And you can do it faster. And with fewer developers (there's less work). Which means you can do it cheaper. All of this means is, if you are writing your front-end and back-end in different languages, you are in a real competitive disadvantage. So any language used for web development is going to see its usage slide if they can't find an answer for transpiling to JavaScript. And hopefully having an isomorphic answer the way JavaScript now has.