It happens all the time. You should always be mindful that your role is to create something that someone junior can take over. And to grow your business so tha

It happens all the time. You should always be mindful that your role is to create something that someone junior can take over. And to grow your business so that junior is your employee. You could have outsourced maintenance to that junior freelancer yourself and dropped your charges a bit. That's how all businesses grow. The farmer eventually employs a farmhand, the storekeeper employs a shelf filler.