(This is the 100th post on this blog!)
I'm reading this NYT article about iPhone applications (yes, another one):
There are now more than 25,000 programs, or applications, in the iPhone App Store, many of them written by people like Mr. Nicholas whose modern Horatio Alger dreams revolve around a SIM card. But the chances of hitting the iPhone jackpot keep getting slimmer: the Apple store is already crowded with look-alike games and kitschy applications, and fresh inventory keeps arriving daily. Many of the simple but clever concepts that sell briskly — applications, for instance, that make the iPhone screen look like a frothing pint of beer or a koi pond — are already taken.
This reminds me of the 1990s, when there were about a million crummy shareware apps, most of them redundant (and, I imagine, unprofitable). This waste of resources is one of the costs of proprietary software development.