No. Yoga is not an institution run by any single, dominant figure or group that can profit off "selling out".
Perhaps there are individuals who intentionally use yoga as a means for obtaining wealth - but as yoga teaches, those very individuals will never experience the true benefits of the practice. At the beginning of my yoga teacher training we were taught Patanjali's eight limbs of yoga. With the help of flash cards and child-like songs, we memorized the Sanskrit and the meaning to this pivotal teaching - with the hope of internalizing and living the spirit of the words in our daily lives. The first arm of yoga is Yama or Observances ("right living" rules for students to abide by).
Yama: The Observances
- Ahimsa: Nonviolence
- Satya: Truthfulness
- Asteya: Non-stealing
- Brahmacharya: Celibacy
- Aparigraha: Non-possessiveness
So, to respond thoughtfully to Ms. Syman's statement "How Yoga Sold Out", it didn't and it won't. Globalization allows all aspects of culture to be scrutinized and idolized by everyone. You cannot stop the transformation, the acculturation, the assimilation. We are constantly spiraling onwards, a snow ball of beliefs and traditions. At some point someone will try to greedily profit off everything good. But that doesn't deny the good nor does it describe a fundamental "selling out". Today, at the speed of the Internet you can blink and miss the point - completely. Let's allow the teachings of yoga to make us stronger, healthier and happier - and if in the process hundreds of thousands of people follow that path, all the better.