Craigslist also has a lean cost structure. It only has $50$ employees, doesn$$t have expensive offices, and has no outside investors, all of which helps keep the overhead low and the profit margin high $($Mac $2017).$ Newmark has stubbornly refused to evolve over time and the website has remained largely unchanged over the span of its existence. Some argue that this simplicity led to Craigslist$$s longevity and staggering money$-$making ability.