Too accessible?

During class, I asked Dan Nye whether he feared that LinkedIn would become too "accessible." I understand that it's good for the company to benefit from a larger clientele, and also that passive users connected to LinkedIn don't hurt the company in any way except in the way of using up potential space for other, more active clients.
But is it good for society? (I'm talking now only about the portion of LinkedIn that deals with jobs)
I see greater accessibility as having the same effect as a price ceiling would in an industry. It's true that the comparison is not necessarily an ideal one, but it makes sense. [for your reference: http://en.wikipedia.org/wiki/Image:Non-binding-price-ceiling.svg ]
The traditional economic model of a price ceiling:
Imagine that there are apartments in Manhattan for sale. Because demand for the apartments is high and the supply is low, the government imposes a price ceiling so that sellers don't charge prices which are much too high for the layman. The lower price for the apartments makes the apartments more accessible to people who weren't willing to pay the high prices before. Because of this, some people get apartments, and some people loose out on getting apartments. The problem is two-fold, however- not only do some people miss out on getting the apartments, but the people who were willing to pay the high prices (also the people, according to the laws of capitalism, who would have been the buyers of the highly priced apartments) are not guaranteed apartments.
Similarly, if accessibility to connections is increased for a finite amount of jobs, those with high capabilities are often shut out of a job because there are many others with the same qualifications. LinkedIn acts like the price ceiling, because connections to potential employers is one way one qualified candidate can distinguish his/her from another. This way, many equally qualified people will find themselves without offers, with no discernible difference between him and the person who did get the offer. (Previously, it could have been that a person's connections got him/her a job)
I know that parts of the argument are problematic, but all the same this is a serious concern for our generation. There are only so many jobs, and there are vast numbers of intelligent, qualified college students (a number that is growing every year). I suppose my argument is that LinkedIn evens the playing field by providing an easy way to form connections in high places, and that whether or not you think it's a good thing depends on how many connections you have in the world right now.