If you take a big corp down for a day then decision makers definitely notice.
I'd guess that almost every CEO affected asks themselves whether they should be so reliant on Microsoft.
Given that MSFT is down just 1.5% pre-market after what surely must be one of their biggest outages in the past decade, no one thinks much will come of this.
1.5% is basically random intra-day fluctuations.
they didn't every single other time something similar happened so why would this time be different?