It's possible that such techniques are unreasonable in low margin companies, and it could also be said that perhaps these engineering techniques have been a fac

It's possible that such techniques are unreasonable in low margin companies, and it could also be said that perhaps these engineering techniques have been a factor in allowing Google to keep its margins high as it scaled up by many orders of magnitude. Google in 2003 was making less than $1bn/year in revenue... 200x growth in 20 years