Young Monopolist Guide

So, you have an illigal monopoly. Great! Here is a good strategy:
Say you have a monopoly on computer operating system. Adware software makes a lot of money on your customers.
Step 1: Buy the company that creates the best Anti-adware program on the market
Step 2: Bundle the Anti-adware product with your illigal monopoly for free
Step 3: increase price on your illigal monopoly to cover the cost of Anti-adware program
Step 4: Watch yourself becoming the de-facto monopolist in Anti-adware market
Step 5: Buy the company that creates the best adware product on the market
Step 6: Stop blocking (only) it with your monopolistic Anti-adware program
Step 7: Watch yourself becoming the de-facto monopolist in adware market
Step 8: Increase price on your illigal monopoly to cover cost of the adware program
Step 9: Enjoy

For real-world example google for Microsoft. They are now doing just that.