I'd start with a braoder picture first that will have the best chance of naturally funneling you to the information you seek.

I'd start with looking up what merits are used to consider a government ran program successful.

From there use those merits but look for examples of programs and the governments responsible for the programs that have been used as models for what happens when a program FAILS to meet each of those merits.

Then look at what each of the failed programs cost to the taxpayers and what percentage of that goverment's total the failed program accounts for.

Divide those costs by the population of tax payering citizens and you will have what earch failed program cost each person.

Do the same process for successful programs to form a picture of what efficient tax funded programs vs inefficient/failed programs look like.

Ive done similar analysis cant remember what the reson specifically was for but the added bonus of doing the search yourself is eventually you'll start finding similar researchers doing similar analysis and discovering methods, questions, variables you didnt even know you were missing.

What I do remember from my similar search was finding several really good articles on the systematic failures plagueing government ran programs that exist accross many different government models and why they cant be fixed without a complete overhaul of how a governing body is structured.

One of the things they broje down is how any government ran program is the same entity assessing the cost efficiency of a program is almost always the same entity making its budget proposals. Which is the same entity that usually advocated and proposed the program. Which is the same entity whose tenure is dependent on the success of the program.

Its been a really long time since I read the article and did my best from memory but without finding the articles, ill admit I may have butchered explaining that example lol.

Basically for a governing power to have longevity it needs to have redundancies to prevent burning out and those redundancies make gorernment ran programs incapable of having many of the natural variables of business to affect any government ran program.

Again, full disclaimer I'm shooting from the hip and the take away should be the method that works for me to find answers for either really obscure topics or really specific topics.