I have been on 3 - 4 "large" projects. My definition of large = $100+M budget with 400+ ppl working. 3 of the 4 projects failed altogether and were cancelled a

I have been on 3 - 4 "large" projects. My definition of large = $100+M budget with 400+ ppl working. 3 of the 4 projects failed altogether and were cancelled after about a year for blowing both budget and timeline. The large project that did not "fail" was deemed too strategic and the business simply decided to invest more and keep going until done. Once management came to terms with the 3+ year timeline, things got a lot more sane.