I haven't actually given a lot of thought to that particular issue. I wouldn't see why it would be excluded. It is a sport, and it can be regulated. All of the same concerns that one would have around match manipulation in sport racing would be the same ones we would have around match manipulation in other sports.
The importance of education, the importance of being able to report when it's happening and to have consequences, all of those issues would need to be part of the regulatory framework applied to all sports, including horse racing.