I think there is some great merit in this thought!
I've been watching some of the streaming US Open play and as a non 9 ball player ( my love is 14.1) I couldn't help but notice these kids are all running out. I attribute that to the game's "FINITE" characteristics of creativity and challenge.
Now don't get me wrong, I'm not saying that stringing racks together in 9 ball doesn't take a high level of skill, I'm just saying that no matter how you cut it, it boils down to a "paint by number" product, unlike 1pocket or even 14.1 where the individual's specific ability to come up with abstract and creative thinking will make the difference in situations when shot making ability between players is pretty much on an even keel as it so often is with high level 9 ball.
I've been around this game for quite a while and it seems to me that while age certainly attracts folks to games like 1 hole or 14.1, it has as much to do with the ability to put to use many accumulated yrs of knowledge and creativity with confidence, as it does the old story of the father / son bulls looking down over the pasture. The younger generation has yet to acquire this tool box full of creative knowledge IMO.
If you don't know that story btw ... the son says, "dad, lets run down there and have us a cow." The father says, "son, lets walk down there and have us all of them." :wink: