If you look at it from a business perspective, they are doing what they have to as an employee of the WTS.
Spend time in serve-us now, get payment of everlasting life later.
The WTS is the one at fault for the marketing plan, they have piss poor products, the mags and related literature. They use Rutherford era methods in a a modern society that dismisses almost anyone that comes to their door.
When is the last time you bought something from a door to door salesman, besides a kid selling something for fundraising? Ever?
Brings to mind that scripture about being peddlers of God's word, even when I was "in" I thought to myself "how are we not violating this command when we go door to door selling literature?"