You are very brave
I had to visit a very large US customer about a problem on the mainframe. The team were depressed because the new big boss had told them to move off the mainframe on to commodity hardware. Commodity hardware means if you need more capacity you go down to your local Walmart and buy it. The big boss said it would save big bucks once the transition was done.
As part of my problem resolution I had to report to the upper management chain. I also spoke about my views on their change to commodity hardware.
I made comments like "you are very brave" (as in Yes Minister), and "I do not think you understand the capacity you need".
Someone kindly took me aside and explained how their estimates were right. They looked at the amount of traffic into the mainframe on the busiest day, and used that as their base line.
My comments like "on the mainframe 90% of the traffic between applications and the data base are cross memory and is not measured" fell on deaf ears. (Mouth engaged, brain in neutral, ears turned off)
They got a taste of things to come when they ran tests with live data and found the network could not cope, fixing the network then showed they didn't have enough commodity hardware.
Overall the project cost more than the mainframe - but they could not go back a) the mainframe people had all left, b) it would have embarrassed the people who wanted the new scheme. c) they would have all this kit they didn't need.
I used to meet up with someone at a conference, and hear all the news.