Ok, then come put 9ft tables in all the bars near me that can hardly fit two 7ft valleys...
It's not like most players have a choice unless they live near a pool hall that has a lot of 9ft tables, and I'd wager most pool playing American's don't live close to a real hall.
There's two places sort of near me that have 9ft tables, and they both only have a couple so you could be waiting a long time to use them.
We're a product of our environment, and there's hardly any 9ft tables in my environment.
If there were 9ft tables at my disposal like there is 7ft tables, it's all I would play on.