Why does Iterable not provide stream() and parallelStream() methods?

I am wondering why the Iterable interface does not provide the stream() and parallelStream() methods. Consider the following class:

public class Hand implements Iterable<Card> {
    private final List<Card> list = new ArrayList<>();
    private final int capacity;

    //...

    @Override
    public Iterator<Card> iterator() {
        return list.iterator();
    }
}

It is an implementation of a Hand as you can have cards in your hand while playing a Trading Card Game.

Essentially it wraps a List<Card>, ensures a maximum capacity and offers some other useful features. It is better as implementing it directly as a List<Card>.

Now, for convienience I thought it would be nice to implement Iterable<Card>, such that you can use enhanced for-loops if you want to loop over it. (My Hand class also provides a get(int index) method, hence the Iterable<Card> is justified in my opinion.)

The Iterable interface provides the following (left out javadoc):

public interface Iterable<T> {
    Iterator<T> iterator();

    default void forEach(Consumer<? super T> action) {
        Objects.requireNonNull(action);
        for (T t : this) {
            action.accept(t);
        }
    }

    default Spliterator<T> spliterator() {
        return Spliterators.spliteratorUnknownSize(iterator(), 0);
    }
}

Now can you obtain a stream with:

Stream<Hand> stream = StreamSupport.stream(hand.spliterator(), false);

So onto the real question:

• Why does Iterable<T> not provide a default methods that implement stream() and parallelStream(), I see nothing that would make this impossible or unwanted?

A related question I found is the following though: Why does Stream<T> not implement Iterable<T>?
Which is oddly enough suggesting it to do it somewhat the other way around.