Same for alot of things.
There are a lot more women in the world, statistically, more than men. It's a pretty flooded stat, so by that logic, we'd have a lot more lesbians than we would have hetero couples ...or do we? What about the women that choose to be alone, or the men that choose to be with other men? Statistics, probability...confusing subjects to throw into the mix. Same goes for this scenario:
A hundred people compete everyday for one job, yet the money for that job stays the same...if the money increases, the competition ratio increases. Say the next year, for the same job, the salary goes up by 20% and now there are 200 people applying and, as before, only 1 person gets the job.
In other words; potatoe, potato...there will always be competition, the stakes will rise or they won't; we have little control over the outcome. Economics is impossible to predict on demand/availability alone.
Another scenario:
There are a lot of economists in the world, yet there are only 1000 jobs available in Uruguay for economists. There are 2000 economist graduates in Uruguay, however, so what happens to the profession? Chances are the graduates will not all want to work in Uruguay; some will go elsewhere.
Like with the UK photographing students; some will have to go elsewhere, but the statistic is too small to influence the profession as a whole. I suspect nothing will happen, but who knows? I'm just speculating.