Seeing the statistics about young American men's betting habits makes me feel old.
If you take $1000 from a few gambling addicts? You spend your own time and effort doing that - while the negative impact of that loss on their livelihood is likely to be larger than positive impact of your gain on your livelihood.
It's why gambling is usually regulated so heavily. Some people must have thought that sports-flavored gambling is going to be different - or were financially incentivized to think so. Turns out it isn't.
What's your point? /s Negative things happening to other people is "0," as long as you are getting something from it. In some cases, it may actually be "good," if you don't like the people suffering negative consequences.
This is not a trait that only applies to gambling. Almost every corporation on Earth takes the same attitude.
That's why unregulated capitalism is very bad.
At least sports gambling is fairly "pure" in that regard.
The market is moving towards a model that is more similar to financial markets with price discovery from informed participants. It enables higher volume, this business model is used by Asian books such as SBOBet...but the market is where it is now, and most places are also using beards to bet at soft books too, and those books will continue to try to protect their business as it is now.
Btw, one of the major issues that explain why books are soft is the use of marketing to fund growth. If that spending wasn't required, it would change the operating model completely to one where gambling companies took a spread. But the marketing spend is the main avenue of competition, not price.