Its an interesting task to do if we are knowledgeable about sport activities and gambling and then creates a prediction site because people will subscribe to what we offer and we are going to make it big form it, our predictions don't have to be always accurate, but we can to an extent give a close to accuracy prediction in which the people will accept in gambling.
When it comes to money issues humans can be very funny, no matter how much you try to analyze your predictions cannot be hundred percent accurate and people wouldn't even understand this because all they know is that they subscribed to your channel to win only, they are not ready to bare losses after subscribing and the reason is because some of them stake a very large amount of money, it the game doesn't play out they will start throwing shades and blaming, some might even go as far as reporting your account. These are the downsides of having a site or channel that no one talks about
You are absolutely right, and also a reason why no one should actually start a sports betting channel when they themselves know that their game predictions won't be atleast 80 to 90 percent accurate at all times, or even go as far as collecting money from people for subscription to the channel, because for what ever thing you collect money for, you are expected to deliver accurate result, if not, then you are automatically a scammer.
But then, for those who are not sure about their accuracy in predicting the outcome of sports games, but still want to have a channel, it's better for them to have a free sports betting channel where people can subscribe for free willingly, and there should also be a disclaimer explaining the risks involved in betting on any game on the channel.
This way, any body who subscribes to the channel does that on their own, and anyone who decide to bet on any game posted on the channel is also doing that on their own, if the game end up on loses, they can't hold the owner of the channel responsible because he or she did not force anyone to bet on those games, or collect money from any one before giving them access to bet on those games.