Before, we had many situations where they asked me to take a look because something could have been a software issue but then turned out to be an AWS issue instead. That's always nasty if I need to tell my client "sorry you're offline, try calling Amazon". Even if they understand that there's nothing I can do, emotionally they still feel disappointed in me. When I use my own infrastructure, I can avoid these situations because it's in my power to make the necessary hosting repairs, too.