In sports, there is always someone winning dominantly. It can get to a point where they are almost always expected to win. By that point do you continue to bet on those favorites to keep winning or does it bore you? Would you enjoy stirring it up a bit just for the fun of it and betting on the underdogs even if the chances are quite low?
I don't see why I would want to lose money on purpose by betting on a team I know for sure would lose just to simply stir things up a bit or so, money is not easy to come by and I wouldn't waste it like that.
First, let me say that I don't know what your definition for "dominant" is because as far as I know, in sports, we can't say that a team or club is dominantly winning matches if they manage to win 5 to 6 matches in a row, and this is because such result is easy to achieve, alot of teams and clubs easily do this, so for me personally to consider a team or club as a dominant winner, they have to have won 10 to 15 matches or more in a row and still counting, such is hard to find if we must be sincere with ourselves..
It's pretty hard to find a team or club that can play up to 8 of 9 matches and win all without a single draw or loss, so the term, dorminant force in sports, really doesn't hold much value if you ask me because if you will continue to bet on this particular team, at some point you will lose because the game played out differently, but on the other hand, if I come across such a team or club that never losses any of their match, I don't and wont mind always betting on them so long as I keep making money, I am never bored of making money bud 😁