How do you earn an income even if you are not physically there?
If you are a speaker, this might not work for you.
Because if someone booked you, I can't show up on your behalf!
However, if you are able to deconstruct the way you deliver value into a series of processes, you can then identify what are the parts that only you can do.
As for the other parts, you can either hire a team or you can use software/technology to automate it.