Ecosystem and knowledge. Linux has been the go-to OS for servers for so long, it supports every scenario from simple home labs to high performance webservers,

Ecosystem and knowledge. Linux has been the go-to OS for servers for so long, it supports every scenario from simple home labs to high performance webservers, complex multi node service orchestration, globally distributed data stores, you name it. Also, I don't know how to do simple stuff in Windows land such as using Powershell or how to harden a sever instance. Like I don't even know how permissions, users and processes work in Windows. Given the effort involved in learning a new OS and the risk of using something proprietary (from Microsoft, a company that has acted in bad faith consistently over the years), it would take a HUGE upside in something like performance, ease of use, etc... for me to make this movement.