Still, I can confirm from personal experience this is how the world works for many people. Been in multiple companies that went bankrupt because the sales people showed this behavior.

Pretend you're a customer. Would you buy from someone who promises everything at a price that cannot sustain his organisation and accepts no responsibility?

Have you met your local politician who is trying to make decisions on things they don't understand?

I'm an expat. My politicians aren't local.

The two I've spoken to were also both knowledgeable and intelligent, so your rhetoric is glib but a little lacking in factual accuracy.

Pretend you are a CIO with an average job tenure of 18-24 months.

Do you give the CEO the right, expensive and difficult answer? Or assign accountability to a third party, bug out and leave the mess to the next guy?

In most companies with mediocre the latter is the answer.