Erlang doesn't scale as in Erlang doesn't scale to larger projects when you require lots of people working on them. I doubt we could put our 2MLOC trading platform into Erlang and get away with it.
It certainly scales from a technology point of view.
Go is simple enough to allow Mr X's code to go through a review by Brad F until Mr X gets the point.
http://basho.com/products/riak-overview/
I think you mean Erlang's strict CSP -- share nothing -- is not as efficient as shared memory systems such as Go. That is a fact and by design it is a feature and not a bug. Nine 9s: http://pragprog.com/articles/erlang
> Have you tried finding Erlang programmers?
Go looks easy but it is a subtle language. Brad F. writes a server and it performs. Mr. X writes one and it crawls. Go figure.