Why the Trend Micro Maximum Security both have full version of product Keys?.

I Just wonder why the Software, (Firewall), Trend Micro Maximum Security and Password Manager should have each Product Keys. What my understanding about it, I have a concerned about, why I can't get the profit properly. The Trend Micro Maximum get the Full Version because of the Keys, but the Password Manager get the Trial Keys which is why the Browsers always have to Download so many times, and other Programs as well. My imaginations but I don't know. I just have to explain but hopefully there will be an answer.