No no no! You've got it all wrong, supercomputers are the consumers next home PC. By the time we all get supercomputers they wont really be 'super' anymore (I don't hear any complaining over that ;).
EDIT:
On the other hand, you could say it's impossible to have a supercomputer on every desk... because the minute you have a supercomputer on everyone's desk, the supercomputer becomes commonplace, and ceases to be a supercomputer.
Same track my friend :)