What platform are you talking about? The App Store is one of the (by the numbers) worst places to actually try to make real money as a developer. Average app price, by the numbers: around $1.90. Average sales $ per annum: around 3K. Half of all devs will earn less than $700 per year.

The App Store is in a bubble and that bubble will burst, not because the App Store is evil, but because it's in the nature of bubbles to burst.

You'd literally have gotten better traction developing ActiveX controls for IE5, back in the day.