Somewhat common-sensical (and somewhat self-promoting), but theses guys (Rorion Gracie's sons) make some good points. Although relating to BJJ, it does address wider issues of the problem with purely sporting MA, while also acknowledging the benefits of sporting MA.
I think BJJ is going the way most other MA are going: tournaments and gold medals are becoming the most important thing. Old saying that might be true: The further you go from the source, the muddier the water gets.
"Let your food be your medicine, and your medicine be your food"