I disagree.
The problem with pool (in the UK at least) is, there's too many moderate players with very low levels of intelligence, who think they're the best thing since sliced bread, with a unique talent. They lie, cheat and scam their way around a table, and this deters casual players from playing the game more seriously. They won't play unless there's an easy score on the cards, and give nothing back to the game whatsoever.
Pool is dying because of gambling and lowlifes. Pool needs to attract a more educated and refined crowd. It desperately needs to modernise.
Disagree. Though the players you speak of do exist, and all over, not just the uk, this is not the reason pool is dying. Movies such as The Hustler and The Color of Money and the resulting booms have proved that. Also, where do you see people gathered around a table watching intently the most often? Money games. There are a lot of reasons pool is not doing well but gambling and lowlifes is not one of them and never has been. You might be surprised at how educated some pool players/fans are.