That ignores the diminishing returns on additional staff. Also your math is off let’s say 1 person costs 100k/year including benefits SS energy hardware office

That ignores the diminishing returns on additional staff. Also your math is off let’s say 1 person costs 100k/year including benefits SS energy hardware office space etc and you upgrade every 2.5 years that’s 5k/person above the base cost of having any hardware/software. Now, it can be close if your comparing 150 people vs 151 people but I can tell you better hardware would be more productive in that case.