Oh, totally forgot about my dad and my best friend’s dad (“Dave”).
My dad was self-employed for most of my life, inherited the business from his dad. He, self-admittedly, didn’t pay close enough attention to the industry, and by the time I was in college, he could no longer make a living doing just that job. So he went to work for the post office and still has his own business on the side. And even after he retires from the Post Office, he’ll still work his own business because he likes it so much. He’ll run his shop until he dies.
Similarly, things were happening with Dave’s company. Dave didn’t like the way the company was going, but really liked the work and his coworkers. He got a primary job with a different company in the industry and works for the first company as a “consultant”. So, two jobs. Not sure if either of them is actually full time, as Dave is pretty close to retirement.