I worked in sales for a Fortune 500 tech equipment and software manufacturer. When a customer had a serious outage with a single piece of our equipment it would cause them to stop and reevaluate their purchasing plans and dependence on my company.

IMO every government and business out there is going to be looking at this at every level and IT departments will be tasked to significantly reduce their reliance on Microsoft products. It will take years to actually happen, but I think Microsoft sales are going to take a serious, long term, and well-deserved hit.