For a company like Google it would probably be worth doing just to make sure all those Windows PCs stay online and continue to access Google services/advertisem

For a company like Google it would probably be worth doing just to make sure all those Windows PCs stay online and continue to access Google services/advertisements. Imagine a truly malicious exploit that knocked 10-15% of Windows computers offline instead of joining them to a bot net. Even if only half of those computers were previously accessing Google services they would see a big hit in advertising revenue.