I think the lack of uptake is because ESLs have chosen to use old/crusty style languages, rather than moving to a higher level. Why not implement an ESL in something like Ruby or Python? Using C++ to generate high-level models is not my idea of a time saver, nor is it very "fun". SystemC is only marginally better.
Additionally, I think that the IP developers are "getting it". Dillon Engineering has a rather interesting Python-based flow (http://www.dilloneng.com/ingenuity/paracore/flow) that would be nicely completed with a Python-based ESL.
Just my thoughts.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.