Tuesday, May 07, 2013
The singular verb comes is wrong (Daily Telegraph, 5 October 2012) because it has erroneously been made to agree with the singular noun immediately preceding it, i.e. focus.
Rather, the verb should agree with drawbacks, the real subject in this sentence, which is an example of subject–adverbial version. Sans inversion the constituent order would have been
But drawbacks come with this narrow focus.