In 1980-1990 old style sales (before internet) process cost was calculated as follow: Cost of sale: 1x Client is charged minimum: 3x Everything under 3x was tr

In 1980-1990 old style sales (before internet) process cost was calculated as follow: Cost of sale: 1x Client is charged minimum: 3x Everything under 3x was treated as an unsustainable biz model. So for example if you spend 30k on sales related cost then your minimum charge is 90k so the diff 90-30=60k can be spent on product dev, company expansion etc. I dont know what is the current model for b2b saas etc.