It is okay. There's still not that much attention to rock climbing but who knows that in the future, we'll see those hobbyists of this activity and they will influence a lot of people to love this sport.
And by that time, if there's that much traction on this, there will be some interesting bookies that will start to look at it and will put it to their books as there are people who loves to do it so, they'll have an idea that there will be also bettors that would love to do it.
And by that time, if there's that much traction on this, there will be some interesting bookies that will start to look at it and will put it to their books as there are people who loves to do it so, they'll have an idea that there will be also bettors that would love to do it.
I doubt that rock climbing will become popular, firstly it is not a game sport, and secondly it is not a team competition. Perhaps it is interesting to see how someone has achieved mastery in something (for example, climbing), but it is unlikely that anyone will do it regularly. I've noticed that only team competitions have become popular lately (maybe because of the randomness and the fact that each team has a chance against each).
You've said are facts and we don't know the future of it, but we also don't know on the side of sportsbook. They might think of it as a sport as long as there's traction and popularity.
But right now, we can see that it isn't yet popular.
maybe there is a special community in your country for this hobby. but indeed rock climbing is not as popular as ordinary climbing boards. and climbing board is exist in several big tournaments like the olympic games , asean games etc, and yes sport with only single player hard to choose espicially if you dont really follow that sport. 
