Sousa pointed out, recorded music reduces the number of people who can make a living playing music.He should have read his Henry Ford. http://www.gutenberg.org/dirs/etext05/hnfrd10.txt
In a little dark shop on a side street an old man had laboured for years making axe handles. Out of seasoned hickory he fashioned them, with the help of a draw shave, a chisel, and a supply of sandpaper. Carefully was each handle weighed and balanced. No two of them were alike. The curve must exactly fit the hand and must conform to the grain of the wood. From dawn until dark the old man laboured. His average product was eight handles a week, for which he received a dollar and a half each. And often some of these were unsaleable--because the balance was not true.
To-day you can buy a better axe handle, made by machinery, for a few cents. And you need not worry about the balance. They are all alike--and every one is perfect. Modern methods applied in a big way have not only brought the cost of axe handles down to a fraction of their former cost--but they have immensely improved the product.
Like the machine-made, to the artisan-made, axe handle, recorded music is vastly superior to live music - especially given today's digital recording and distribution systems. Leveraging mass distribution, a musician today can afford the luxury of honing a fine product. A live performance is rarely a fine product. It is usually middling in quality, and often below middling. It is usually expensive. For those that wish to see as well as hear their music, today, with DVD and Blu Ray, the live performances that are good can be distributed in a high-quality captured form to wide audiences, at low cost.