"There are also broader cultural and aesthetic problems which have arisen from the piano’s dominating role. When a fretless instrument such as a violin gets introduced into a new culture, it can adapt itself to the indigenous musical language, as for example in India.
When a piano gets introduced, however, the indigenous music must conform to the piano’s tuning system. Historically, the piano has been a kind of “colonizer” in this regard. Moreover, the privileged cultural status of the piano has lent an authority to 12-ET which makes it appear superior and more legitimate than other tuning systems.
The more acclimated we are to hearing almost exclusively equal-tempered music, the more natural it sounds and the less accepting we are of alternatives. Music and instruments which use alternative systems, including non-Western music, are perceived as irrational, archaic, experimental, exotic, or just plain out-of-tune–not just different, but deviant from so-called normal 12-ET."