> We have static types

But several of our most popular languages don't (e.g., Javascript, Python), with Javascript having particularly ugly behavior.

> standard data formats

We're moving from more formalized data formats (XML) to far lesser formalized data formats (JSON). For example, the former gives relatively powerful tools (through XSD) to define types and what constitutes valid values, while the latter doesn't even have a standard date format. Perhaps JSON schema will one day invalidate most of this concern, but it's still pretty young and not widely utilized AFAICT.