I was surprised that only three active corporations showed up. Of course, there may be others without "Eagles" in the name.

At this point, I doubt that money is a big lure but... they want to make enough to pay everyone and make a profit. If the solo tours only break even - or even make a loss - that will matter less if there's an occasional Eagles show to pay the overheads (and keep management interested).

Those registration documents tell us about the officers of the corporations, not about the shareholdings, though it's likely that the officers are shareholders.