When you’re just getting started and you’re strapped for cash, you typically do all sorts of things to pinch pennies. It’s just part of surviving, and it’s a healthy thing to do when you’re not actually making any money. The danger, however, is keeping that mindset after you’ve got a steady stream of cash flowing. It’s a danger that creeps in to a lot of startups and never goes away, causing generally sane people to do insane things in the name of not spending money.

https://baremetrics.com/blog/build-it-buy-it