1) Define your branded TV/Computer as only being "official non-counterfeit" if plugged into your own branded mouse/keyboard etc.
2) Fry anything it touches that is not wearing the brand, including users for breaking "T&C" and "EULA" and all your absolute control and rights!!!
3) Take in loads of new orders for components, as strangely the users own ones keep failing.
...
4) Profit?