I would say the past ten years of dealing with the music, the industry has become very competitive. With the many albums I've put out somehow I still have the ability to hold onto the majority of anything I've manufactured.
On the other hand, running a trucking company is far more complicating I've found, in that there are numerous fuel taxes and miserable fees every company has to pay in order to stay in business, (even if a company doesn't have any trucks of it's own).
Both Industries are highly competitive and I really couldn't complain. Overall, I think I've done an alright job for a guy my age.