When you start you don't need to handle millions of customers worldwide. If all you need is to handle a million customers per month digitalocean can handle tha

When you start you don't need to handle millions of customers worldwide. If all you need is to handle a million customers per month digitalocean can handle that on a single server and you wouldn't hire a single let alone many developers to manage that. If you ever reach the point where you need to handle 100s of millions of customers a month / hiring someone can save you money but perhaps serverless makes sense. 99% of businesses will not reach that level.