Based that you are a pro photographer and you work with many of them you are pointing this out, or do you have some market survey? At every ice hockey match that I cover we are 5 to 10 pro photographers all with 1Dx (ca 40%) or D5 (ca 50%) , more than half produces also videos from interviews at the end of the match to promo video for the club etc. When I cover FIS alpine ski people also do video. Same for Horse races and car races. The way that you get pay is to get affiliated to a team,