That is the whole point. Somebody needs to try it and see.
No, seriously... Please tell me you are not that oblivious as to think the only reason pool is not hugely popular today is because of long race matches...
You do realize short match pool has had HUGE chances to make their mark, with huge prize purses and the top players in the world playing short matches all on television. And it did not work, people did not tune in, the tournaments folded.
The problem with this sport are not the length of the races, we have tried all sorts of various length of races and all have had the same crappy results. Sorry but if you truly think that the length of races is what holds pool back from making it big you are clueless.