IMO, Erlang/Elixir/BEAM/OTP really is the toolset that can be used to build what the mystical 10x/100x programmer can achieve. But that's also the reason why it's hard to push for its adoption into bigger teams. When the value proposition is "you can do all that by only using Erlang/Elixir/OTP...", while the alternatives are based on multiple, but more "traditional" and well-understood systems (which you are easier to hire for) ,"using one thing for all" sounds more like a risk (and potential tech/dev lock-in) than an advantage to the management. Love to hear success stories of how Erlang/Elixir are pushed into "mainstream" within a relative large org.