There has been a lot of buzz lately about the iPhone replacing the PC. Here’s one from my buddy, Harry McCracken. The owner of the Dallas Mavericks, Mark Cuban, wrote a piece as well. There is certainly a lot of buzz and hype about the iPhone, but as a practical matter, the iPhone is nowhere near able to significantly encroach onto the venerable PC’s territory. As I write this, I am thinking of all my friends that have iPhones, and the look of pride on their face. I am not trying to rain on that parade, I just honestly do not think of the iPhone in the same category as the PC. Here’s why.