If open-source software is supposed to be free, how does anyone selling it make any money It’s not that different from how other software companies make money. You’d think that a software company would make most of its money from, well, selling software. But you’d be wrong. For one thing, companies don’t sell software, strictly speaking; they license it. The profit margin on a software license is nearly 100 percent, which is why Microsoft gushes billions of dollars every quarter. But what’s the value of a license to a customer A license doesn’t deliver the code, provide the utilities to get a piece of software running, or answer the phone when something inevitably goes wrong. The value of software, in short, doesn’t lie in the software alone. The value is in making sure the soft- ware does its job. Just as a traveler should look at the overall price of a vacation package instead of obsessing over the price of the plane ticket or hotel mom, a smart tech buyer won’t focus on how much the license costs and ignore the support contract or the maintenance agreement. Open-source is not that different. If you want the software to work, you have to pay to ensure it will work. The open-source companies have refined the software model by selling subscriptions. They roll together support and maintenance and charge an annual fee, which is a healthy model, though not quite as wonderful as Microsoft’s money-raking one. Tellingly, even Microsoft is casting an envious eye at aspects of the open-source business model. The company has been taking halting steps toward a similar subscription scheme for its software sales. Microsoft’s subscription program, known as Soft- ware Assurance, provides maintenance and support together with a software license. It lets you up- grade to Microsoft’s next version of the software for a predictable sum. But it also contains an implicit threat: If you don’t switch to Software Assurance now, who knows how much Microsoft will charge you when you decide to upgrade Chief information officers hate this kind of *’assurance", since they’re often perfectly happy running older versions of software that are proven and stable. Microsoft, on the other hand, rakes in the software-licensing fees only when customers upgrade. Software Assurance is Microsoft’s attempt to get those same licensing fees but wrap them together with the service and support needed to keep systems running. That’s why Microsoft finds the open-source model so threatening: open-source companies have no vested interest in getting more licensing fees and don’t have to pad their service contracts with that extra cost. In the end, the main difference between open-source and proprietary software companies may be the size of the check you have to write. "That extra cost"(Line 7, Para. 5) probably refers to
A. software-licensing fees.
B. total cost of a software product.
C. payment for service contracts.
D. the charge for subscription.
将下列句子连接成意义连贯的一段话。最恰当的一项是:()1.他们终于登上了珠穆朗玛峰的顶峰,完成了人类历史上从北路登上世界最高峰的创举。2.举目回望,朦胧的夜色中,珠穆朗玛峰区群峰的座座黑影,都匍匐在他们的脚下。3.现在,他们三个人的头顶上,只有闪闪发光的是斗,再也找不到任何可以攀登的山岩了。4.越过东西面一段雪枝以后,王富洲。屈银华和贡布向右流至背面的岩石坡连续向上攀登,终于登上了一个岩石的积雪交界的地方。
A. 1324
B. 4132
C. 4231
D. 2431