The road to here is littered with Dataflow attempts. I am thinking in particular of the Transputer and the Hypercube, though I also came across several others that never made it out of the lab. I have a design bucket list of my own - back in 2000-5 I designed a Dataflow graphical progamming "language" we called VNOS. Its really nice (of course I'm biassed:). But that list of mine is waiting for me to get the time and energy to build a hardware version of VNOS out of a large array of very tiny CPUs, with VNOS as the programming and operations UI. FPGA tech passed my requirements a few years ago, all I need now is the time, money, and energy
But DF has always had this uphill battle against the traditional Control flow paradigms, which all the major development methodologies support. Procedural programmers have problems grokking it. Naive non-programmers love it, but they have no say in the industry.
One has to wonder if now MS is spending serious time looking at programming with Petri nets it might finally get some mainstream traction.