What is happening to stock price? oh; its sunday; forgot we can't trade.
In the background of such high volatility, it would be hard to pinpoint such a material effect from such a small disruption (in the big picture of course, I'm betting there are some pretty angry customers today due to the loss of a few sigma of reliability from this outage alone).
Now if a study were published indicating customers were switching providers over incidents this, then I think you'd have some material evidence. But is anyone else better yet? Azure was out for 12 hours last year apparently...
http://www.datacenterknowledge.com/archives/2015/01/23/cloud...