You can hire knowledge
You can hire knowledge. This was a major revelation for me. It can quickly get very expensive, but you can always find knowledge within your budget.
You might be used to hiring other people for long term work. But you can also hire them for short, bursty work. If you're a dev, it is like spinning up temporary servers for executing jobs.
This fact is a general knowledge to some people, but a surprising discovery to most. A moment of insight that makes them go - "I didn't realize that I had this option"
You'll be surprised how many short $100/hour to $1000/hour calls occur every day. It is way too common. Maybe you just never noticed it.
There are a thousand reasons to hire people. There are a thousand tasks you can delegate away.
Also, if you have knowledge - you can sell it as a service on calls.