All of what you are saying is absolutely true, but frankly doesn't matter at the executive level.

If it is a board priority to extract favorable terms from vendors (and it absolutely is right now), we will get it done consequences be damned. If you can't do it, we'll fire you and replace you with someone else. You saw this with enterprises making 12-18 month roadmaps to completely tear out VMware ESXi and migrate to Nutanix.

Unlike Broadcom which has a much more diversified business and purchased actual market leaders which allows them to be so vicious, Oracle's SaaS products have a much weaker hand as the headline of churn is much more destabilizing for a market laggard like Cerner or NetSuite than choosing to drop from 90% gross margins to 40% gross for strategic customers - and purchasers know that.

As such, as a business who is not in a position to protect against strongarming purchaser you need to preemptively build additional margins slack where possible, and it is in this vein that the NetSuite and Cerner layoffs happened today.