New problem: Data serialization is now centralized and there are N ways of converting between the centralized way it's been serialized and everyone's incompatible structural needs.
Hey, at least then we've improved the format conversion problem from O(N^2) to O(N). :)
In practice, though, you end up with something like XML, which (to steal a phrase, I wish I could remember where I read it) is less a common language than it is an alphabet. I guess it's better than CSV.
Problem: the computer systems we use are insufficiently flexible/too flexible, encouraging the use of N different ways of serializing data.
Solution: make a computer system which encourages centralizing the mechanism by which data is serialized.