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If CIOs want to receive upgrades, patches and access to tech support—as inadequate as it can sometimes be—they have to pay the yearly maintenance fee. Software companies earn a significant amount of cash from these fees. So it's in the manufacturer's best interest, at least financially, to make products that need maintenance and that have to be continually improved with successive updates, patches and versions that CIOs pay for up front. In sum, bad software works for the vendors.