The supervision trees require a few features of the VM that are hard to replicate in other runtimes. Links and process isolation being the main ones. Robustnes

The supervision trees require a few features of the VM that are hard to replicate in other runtimes. Links and process isolation being the main ones. Robustness aside the BEAM has other nice properties such as the concurrency model, the concurrent and predictably low latency GC, and it's distributed and parallel computing features.