OP just seems like another one of this people who wants to get rich quick.
If you want Bitcoin to succeed the exchange price is not important. The important thing is, that people can use bitcoins and get used to using it.
Success is about gaining acceptance.
Vendors will keep more and more of the bitcoins they earn eventually .
And don't worry, the exchange price will follow eventually.
But that is a slow process.

If you want to get rich quick, you can try daytrading, but that is a big risk and I personally wouldn't recommend it.