Nothing will change. Nobody who is in a decisionmaking position will learn any lesson from this.

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.