Why? Async isn’t cost free - it’s more complicated and that complexity comes at a cost. If your company has only basic needs, you have to question whether you’re providing the best value for your company by doing anything more.
Especially when a platform doesn't have libraries that support it fully. Node and ASP.NET are the only fully async platforms I'm really aware of where this isn't a huge problem. Of course there are others with great but not async concurrency models as well. Regardless, it's definitely a minority of use cases where the concurrency model should even be a priority.
Because we are getting more and more CPU cores to utilize. I don't think this trend will stop soon. The software stack will have to adjust to this and it already does. The next generation of mainstream (highlevel)languages/frameworks will be those that are designed to easily utilize CPU cores. It may be more expensive for now, but it might pay out later and I think it's much more exciting. ;)
