Some freemarket - this is not the implementation of an idea I support - wait for bitcoins II or III or a similar idea which is more fairly distributed - the only way they are going to get money for free is from YOU when you buy THEIR bitcoins. And who's going to buy them from you?
Why other people of course? As with any item of value, theres always new buyers (new people being born everyday for one) and a market. Of course competition and profits may drop in the future but what the future holds for Bitcoin really is a guessing game at this stage. IMO its never been done before.
Best you get in now.