If just Apple have launched the SDK kit, that enables 3rd party softwares to run on iPhone, the numbers of iPhone users will grow significantly in business & corporate environment. It's undeniable, that iPhone is walking one straight path to the most successful & most wanted mobile phone. What really holds back Steve Jobs (Apple CEO) to release that SDK kit as soon as possible has been a mystery for all of us. Because with wider options for 3rd party apps will increase people's interest to purchase iPhone.
That's not all, Apple also have declined the possibility to release iPhone at China. Although China Mobile (one of the largest in China) have expressed their clear intention to bring iPhone to the mainland, if Apple is to open up to China's market; this will take them straight to become the biggest mobile phone manufacturer in the world. With the iPhone look alike: Meizu M8, which manufactured by a Chinese company, it’s a clear indication that iPhone is popular too in the mainland.
So what's stopping you Steve?
(blogged with my Treo 750v)