I am going to assume that this was a question you asked out of true curiosity and not a rhetorical one.
Technology has commoditized a lot of things historically. Just because you don't see something happening, doesn't mean it won't happen in the future.
Also did you read the comment you just replied to? Because that's exactly the answer to your question. Currently the language translation has not been commoditized because we still have the last mile problem. There is always certain threshold technology needs to cross before it becomes widely spread. Currently using those dictionaries and google translate are still too slow and you can't interact in realtime that way. Once you can directly hook circuits into your brain (or something with a similar effect), this this will change.
Technology has commoditized a lot of things historically. Just because you don't see something happening, doesn't mean it won't happen in the future.
Also did you read the comment you just replied to? Because that's exactly the answer to your question. Currently the language translation has not been commoditized because we still have the last mile problem. There is always certain threshold technology needs to cross before it becomes widely spread. Currently using those dictionaries and google translate are still too slow and you can't interact in realtime that way. Once you can directly hook circuits into your brain (or something with a similar effect), this this will change.