OSD600/DPS909: Opened license vs. Closed license/EULAs

I read the BSD 2-Clause License and Skype’s license. I was surprised following facts about these two types of license. First of all, the length of the licenses are quite different. BSD 2-Clause license is very short. On the contrary, Skype’s license is quite long. Second, the content of the license have the big difference as well. BSD 2-Clause license only contains the license template and conditions to redistribute and use. Skype license have much more content, containing 22 sections. Each section is about the different aspects, such as charges, payments, and license, use of the software and products and Skype and so on. It puts as much as possible related content into the license. Third, the tone and the words they used in these two license are different. BSD 2-Clause license is not strictly like a business document. The Skype license is a formal business document. It has everything that a formal business document should have.