He could keep it open as a gig on the side with select customers that have been reliable in the past. I would think they would be appreciative of Spark's skills knowing they are going to get the best!
I did a few on the side, which I got well paid for, but it can be demanding if you're working for a concern that's under the gun to perform and scheduling meetings becomes an issue. Don't need to do that.
I'm sitting out in the woods on battery power working on a control system for a small pipe mill from one of the bosses favorite customers. If you can get a contract like mine...
