Original sentence: As of July-2007, Microsoft Windows held a large amount on the worldwide desktop market share, although some  predict this to dwindle due to Microsoft's restrictive licensing, (CD-Key) registration, and customer practices causing an increased interest in open source operating systems
Edited sentence: As of July-2007, Microsoft Windows held a near-monopoly of 92.86%  of the worldwide desktop market share, although some  predict this to dwindle due to Microsoft's restrictive licensing, (CD-Key) registration, and customer practices causing an increased interest in open source operating systems