Google's stock just took a 3% dip (~$36), since 10 AM (close to gmail downtime).
https://www.google.com/search?q=GOOG
FB is down almost 4%, AAPL is down almost 2%, TSLA is down almost 4%, AMZN is down almost 3%, the whole S&P 500 is down ~2%. I'm pretty sure the market doesn't think that an Apps outage threatens all those companies (and the whole S&P 500) to the point that they'd shave whole points off all of their market values.