A plumber who is also a carpenter is usually known as a "handyman". There's a reason apartment complexes big enough to have maintenance staff tend to hire that sort of person over a dedicated specialist.

If you're a large business you should be automating your sysadmins with devops/SRE techniques. If you're a small business you should be outsourcing that work to companies that have automated it for you.

That's why cloud providers and associated services have seen enormous growth.