Mostly, headspace. If I run my own server, I just need to apply my existing Ubuntu sysadmin knowledge. If I use AWS, I have to learn a whole load of AWS-specific domain knowledge, starting with their utterly baffling product names. My time is more valuable than that.
Also, sheer cost. Literally everyone I know in my particular part of the industry uses Hetzner boxes. For what I do, it’s orders of magnitude cheaper than AWS.
Also, sheer cost. Literally everyone I know in my particular part of the industry uses Hetzner boxes. For what I do, it’s orders of magnitude cheaper than AWS.