It's legit crazy how financially illiterate top executives can sometimes be.
In a company I worked for, they decided to stop using on-prem systems and move them to cloud servers. I made a rough calculation on a coffee break with colleagues that the move increases costs by roughly 10 times. It was unbelievable and all we could do was laugh.
Some 4 months later it was announced that the cloud systems are to be decommissioned due to costs and employees have to find a way to do the same things on their laptops (which will be upgraded if needed). I still cannot wrap my head around it, there must have been some nasty politics or absolute numeral illiteracy going on in the background.