Even if you are an indie one man shop you are in fact a business and there are risks. Same thing goes for being a lawyer or accountant or contractor. If you screw up, it could cost you financially in a very big way, even if you didn't intend to do anything wrong.
Even successful businesses can crumble, even billion dollar businesses can get beat up by litigation to the point it isn't even worth continuing.
To say that the sky is falling for indie devs is a bit silly. There are plenty of places you can build, innovate, distribute, and succeed. Sure, the iTunes App Store thing is big today, or maybe Facebook, or maybe Steam, or maybe Wii's downloadable channel, it doesn't matter. Any one of those could be gone in a year or two.
Here's an example, there are people out there who make millions of dollars selling e-books and mediocre/overpriced software on Clickbank right now. Some of those people get sued I'm sure for their products. More people show up. You could take the same ebook and sell it on Kindle or Nook if you got shut down or you could sell your software on the Mac App Store or Chrome Web Store if CB went under.
There are so many platforms to distribute and build software and businesses on now, it really is hard to complain about the death of the indie developer because there are so many new companies getting started every day on all these different platforms that didn't exist even 5 years ago.
As a business owner you can't control all risk, but you certainly can and should plan around them.
If one channel gets shut down, move on to a different one or a different product.
Great devs and great companies aren't built on one hit one time wonders.