The realm of online vocal coaching is a fascinating nexus where technology, music, education, and human potential converge. To understand its intriguing complexities, it is crucial to dissect and comprehend its central entity – the online vocal coach. An online vocal coach, in essence, is a professional who has mastered the art and science of singing and uses digital platforms to teach others how to enhance their singing skills.

Online vocal coaches are individuals who possess a rich tapestry of musical knowledge and practical experience. They are well-versed in myriad singing styles, ranging from operatic to pop. They often hold degrees in music performance or music education, and possess a deep understanding of the human voice's physiological intricacies and the psychological aspects of performance.

In terms of 'how,' the strategies employed by these coaches are multifold. Importantly, they focus on the physiological aspect of singing, which consists of breath control and vocal cord function. Breath control is a critical aspect of singing as the control of exhalation impacts the clarity and strength of the singer's voice. Vocal cord function is equally important, with a focus on how the vocal folds vibrate to produce sound and how different configurations create varied pitch and tonality.

Moreover, vocal coaches emphasize understanding the emotional content of a song and conveying it effectively. This is where the psychological aspect comes into play. It's not just about hitting the right notes; it's also about connecting with the audience emotionally and delivering an engaging performance.

Now, why is the online aspect crucial? The advent of the Internet has revolutionized many sectors, and music education is no exception. Online vocal coaching offers several advantages over traditional face-to-face lessons.

Firstly, the geographical boundaries dissolve. One can learn from an expert situated in any part of the world. This access to global talent is truly transformative, providing opportunities that were unthinkable in the pre-Internet world.

Secondly, it offers flexibility. Lessons can be scheduled according to the student's convenience, making it ideal for those juggling multiple commitments. Moreover, since lessons are often recorded, students have the luxury of revisiting the content as many times as they wish.

Despite these virtues, online vocal coaching has its detractors. Some argue that it lacks the personal touch of traditional lessons. They fear that the subtleties of the student's singing might be missed due to the limitations of audio-visual technology. Moreover, the absence of a physical presence might lead to a lack of accountability and discipline in some students.

However, these concerns seem to be outweighed by the advantages. As per the Pareto principle, or the 80/20 rule, 80% of consequences come from 20% of the causes. In the context of vocal coaching, the majority of a student's progress would come from consistent practice and dedication, which online coaching does not hinder.

In the realm of economics, online vocal coaching could be seen as a form of 'creative destruction,' a term coined by the economist Joseph Schumpeter. Traditional music education is being disrupted and replaced by a more efficient and inclusive model.

In conclusion, online vocal coaching is a paradigm shift in music education that combines technological advancements, musical expertise, and teaching prowess. It fosters a more inclusive and flexible learning environment, empowering many more aspiring singers to follow their passion and reach their potential. Like all innovative disruptions, it has its critics and drawbacks but the potential benefits and transformative impact it holds cannot be ignored.