Z:gnu-www-ja-enforcing-gpl--e31d57-But most proprietary software/en

But most proprietary software companies want more power than copyright alone gives them. These companies say their software is &ldquo;licensed&rdquo; to consumers, but the license contains obligations that copyright law knows nothing about. Software you're not allowed to understand, for example, often requires you to agree not to decompile it. Copyright law doesn't prohibit decompilation, the prohibition is just a contract term you agree to as a condition of getting the software when you buy the product under shrink wrap in a store, or accept a &ldquo;clickwrap license&rdquo; on line. Copyright is just leverage for taking even more away from users.