Why Path Finder 4 is Tiger only

In the end, it's our customers that drive these kinds of decisions. Every time a new major release of OS X comes out the Finder has access to new features - features that our customers want. It's all part of doing business when you're as small as we are, and your #1 competitor is Apple and the Finder.

If our customers overwhelmingly didn't want us to drop support obviously we would have to listen, but we've done three major transitions so far (10.2, 10.3, and 10.4) and I can count on two hands the number of complaints I received or read online from customers.

His reasons are pretty much bull. Yes, every developer would like to instantly drop support for older OSs every time a new one comes out. That would make life easy. The problem with dropping old OSs—and it's obvious—is that you lose customers. As the lead developer for an app with hundreds of thousands of lines of code, and that still has customers using OS9, I'd love to drop support for everything but 10.4. But that ain't gonna happen. And you know what? It really is NOT that hard to write code that uses new APIs when the OS it's running can use them, and to use the old APIs when it's not. It's Basic Programming 101 knowledge.

I applaud the guy for having the balls to drop the old OSs, but I pity his customers.