Betting exchange? Or Betting casino? I'm thinking about betting exchange where you are betting on exchanges that maybe have the best order book or something. It's definitely something that could be interesting to look at lol. I don't have any idea with this but I'm thinking it's something similar to having more options if you were to be in an exchange? Like you can trade aside from just playing games in the casino or something?
3% is a good risk management thing.
You may have to read through the link shared in few comments below the thread to have idea of what betting exchange really means, although after reading through the entire article to see that this kind of betting is Carried out on an exchange I couldn't find any of such informations, but the this type of betting is more complex compared to the traditional betting.
And also we haven't heard any thread that discus this topic before, and for that we all have to take extra search to discover more about this kind of betting before we can clearly compared betting exchange to traditional sport betting.
There are not so many popular betting exchanges that you can find in the forum. But I remember this
exbet.io -
https://bitcointalk.org/index.php?topic=5187610If you try to click the site, it is already down. Seems that they are out of business already. But they started good as they gave the community some free money to try out their site. However, maybe owed to "complexity" on how to play, it didn't attract patrons to maintain the business.
In this case, I can say, sportsbook are the ones gaining in profit as you can see a lot of bookies in this forum alone and they are continuing to operate and still growing.