kasz, all the banks are connected, they all buy and sell from each other and they are so tied up together it's ridiculous. This is the same for many of those big companies. If a few big ones fail, it could be the end.
The best thing to do is keep them afloat while you impose laws to untangle the strings.
I don't know enough about the situation you are talking about to comment on it, and I'm not really sure I understand what the sentence itself means tbh.