I am going to try my best to show restraint here, I allready wrote three replies which I had to delete for being too harsh.
First "Ronnie is a big fish in a small pond", really?!! I don't know if you noticed but snooker is a major sport worldwide. Just because you don't get it on tv in the US does not mean that it is not. Soccer is another example of this. As a matter of fact, snooker was until the end of the 80's bigger than soccer on tv in the UK! Snooker is being broadcast all over Europe, Austraila, Asia not just the UK, probably Canada too but this I am not sure of. One channel, Eurosport, will send snooker almost round the clock for a week at a time. That means that being a top snooker player not only pays a huge salary, but is also a ticket to fame, not poolroom notoriety but actual fame. They are featured in major magazines and on tv, women throw themselves at them etc. I wonder why pool players do not want this, when they are living on the brink of starvation? Sure Shane makes a decent living, but if he had the same positon in snooker that he has in pool, he would be drowning in money and women.
Look at this list of snooker millionaires in pounds:
http://en.wikipedia.org/wiki/List_of_snooker_millionaires
And please read the article. Not only will the snooker players make a lot of money for exhibitions and the like, but they also get actual sponsorship. Real money, not just a free cue or two.
Snooker is a huge draw, even for live watching, and usually the big events have a packed house. If you held a WPC anywhere but in Asia, you would have a hard time drawing flies. In fact I venture that flies would do anything in their power to avoid the venue. Watch any accu-stats tape for the US open recently and you will see a sad story. All the onlookers are male (except maybe the players girfriends/wives), way past their prime to put it mildly. In fact I'd venture to say that the only companies that could make money advertising at these venues would be denture manufacturers and adult diapers. If you look at the snooker crowds you will see young, attractive women, celebrities, politicians, businessmen etc. I love pool and snooker equally, and I hate having to realize these facts, but that is what they are: Facts.
Here is a list of earnings for one year for pool, (could not find a similar list to snooker) and this is dollars, not pounds.
http://www.azbilliards.com/people/azb-money-leaderboard/2013/all/
I know what you are going to say, lots of them gamble etc. Well, that is correct, but almost all gamblers end up poor in the end. Nothing like guaranteed income (exhibition, sponsorship) to secure your future.
Sure, any true elite pool player would probably be ok at snooker after a year or two of coaching, but would they be elite snooker players? I don't know, but I really don't think so. Because of the rewards for being a good snooker player are so high there are tons of good snooker players, really good ones. And there are thousands upon thousands of regular century break players, which you would have to go through to even get a chance at the top guys.