How have niche sports successfully used digital videos to engage their fans and developed their fan bases over the recent years? In NOT LESS THAN 1500 Words, use 3 case studies with extensive examples of how online niche sports have successfully and profitably used digital videos to engage their fans and developed their fan bases over the recent years. Also, be sure to include your reasons for selecting the case studies, along with relevant stats that give an emphatic support to the topical question. Focus should be in the US, but you can include supporting examples from Europe, Asia and other parts of the world.

The answer needs to be submitted within 2 hours, should be over 1500 words, include insights, a methodology of how you arrived at your answer and sources that you used. The body should be elaborative, including relevant statics and case studies to prove your answer (sources and statistics should not be older than 6 years). Note that sources such as Wikipedia are not accepted for this job.