Valid point, but there are other things to consider. The reason I buy Windex is because it saves me time. Instead of buying vinegar, lemons, and rubbing alcohol and mixing them together with water every time I want to clean a something, I just grab the Windex/Lysol/etc. Likewise, I can spend time messing around with getting configs for various things in order, or I can one click deploy something to Heroku/AWS/DO/etc and not have to worry about it too much. It all depends on what's valuable to you.