This is a great analogy, it is four paragraphs down and you really need to read the whole thing, but in case you don't, here's this:
Imagine you're in charge of bringing pie to a company picnic. You're planning to provide dessert for 100 people. Then, your boss says you need to hand out pie to 150. Fine, you say, I'll make more pies. But -- oh no! -- you can't because you've also been told costs must go down. OK, then you can cut slices of the existing pies smaller so everyone can have a piece. Wait! You can't do that either because you're not allowed to ration (i.e., give less to more).
According to Obama, the health-care pie will be sliced into more pieces, of equal or greater size than available now, for less money -- all because government is so much better than the private sector at managing large projects.
Now, go read it all.