Why has the AirPod been so successful?

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Why has the AirPod been so successful?  Discuss whether Apple has shunned open innovation and adopted a very closed innovation model.

hello, can you please help me to answer these questions. these questions are a part of NEW PRODUCT DEVELOPMENT, INNOVATION and BRANDING.

i have tried to get answer of these questions but i have gotten very brief answers. but my tutor asked to illustrate deeply. means long enough