[bananaface]

Auto-formatting punctuation - or syntax. You can show it a few examples and it will insert punctuation into raw words coming in from speech recognition, or convert badly formatted Python into well-formatted Python. It can correct syntax errors in C++ (!).

More generally, it can convert text from a simple, unstructured form into more complex, more structured form, with just a few example transforms. It's astonishingly good at it, but I haven't seen much on the public net about it. I don't know why people aren't exploring it more tbh.

[tensility]

Now that it is a captive technology, the question becomes why should anyone want to explore it other than Microsoft.

[bananaface]

It's not captive. It's quite replicable (and impossible to monopolise), it's just expensive.