Revenue Scaling Problems with iPhone App Business

My first 10 iPhone apps made $30 / day consistently. If I project this, it will take 100 apps to make $300 / day ($9000 / month).

Problems

1. One app per week must be published (unrealistic for one-man company)
2. Cannot throw an app and expect sales without marketing effort.
3. I did not know the 'Equitable Revenue Share' rule during the start of the iPhone app business.

Only 2% of the iPhone apps make significant sales. The 98% of the apps do not make that much money.