If you're a massive organization and have need for a mission critical database that cannot fail for any reason, with massive scale and scalability, security, reliability, high availability, high throughput, etc., and you want instant expertise available to solve any DB problems, then you're not using Postgres, a cloud database or rolling your own noSQL solution.

I'm talking about huge, billion dollar institutions like banks, financial services, governments, logistics, manufacturing, software, etc. These are the companies run by the "golf executives" who want guaranteed database dependability and are willing to pay for it.

In this case, you'll use Oracle or IBM DB2.

For example, if you're TikTok dealing with billions of interactions, or Boeing, maintaining critical databases of millions of parts, you'll be totally willing to spend huge amounts of money to make sure your data is rock solid, even if it's overpriced (Apparently, Microsoft is one of Oracle's biggest customers of all companies!)