Comment by ModernMech

Go and Go! are pronounced the same way, so yes, they're the same.

Moreover the author of Go! personally requested that Google not step on his life's work. The man had dedicated a decade and authored a book and several papers on the topic, so it wasn't a close call. Additionally C# built on C++ which built on C. Go had no relationship to Go! at all. Homage and extension are one thing, but Go was not that.

A policy of "do no evil" required Google to acquiesce. Instead they told him to pound sand.