I don't even know that I would call it inexperience. I just think a major part of the first pass was selling the idea of USB. You can design a perfect cable, plug, and protocol, it doesn't mean anyone will use it. Most investors don't know much about the technical details of a product. They do, however, understand the price. If you're trying to make a difference in the world, you don't always get to do it with style and quality.
I don't even know that I would call it inexperience. I just think a major part of the first pass was selling the idea of USB. You can design a perfect cable, plug, and protocol, it doesn't mean anyone will use it. Most investors don't know much about the technical details of a product. They do, however, understand the price. If you're trying to make a difference in the world, you don't always get to do it with style and quality.