One of the silly things I hear all the time from IBOs is that the Amway business is simple but not easy. It's a pleasant way of saying something is difficult. Breaking rocks with a hammer is simple but not easy. Licking the sidewalk 5 hours a day is simple but not easy. Walking up 3000 steps in a building is simple but not easy. Many things are "simple" but practically impossible to achieve. I believe going diamond in Amway is one of these tasks that is simple but nearly impossible to achieve.
Buy products, sell products, sponsor downline. That's the Amway business in a nutshell. Certainly these tasks are not rocket science, but the only task that an IBO has control over is to buy products. Convincing customers that highly priced and unfamiliar products are "the best" is a daunting task, and it would appear that an overwhelming majority of IBOs simply cannot do this. Thus the vast majority of Amway sales are to IBOs themselves.
Sponsoring people is also a daunting task. In the US, past IBO behavior has given Amway a bad reputation. Many people cannot even get anyone to see the plan, much less be able to sponsor anyone. Just the mention of the name Amway can get you funny looks from people. Sure, there are some open minded people, but often times in the process of information gathering, they will decide not to get involved. Even for those who do sponsor others, the retention rate of IBOs is so miserable, that you can never stop recruiting if you hope to retain your level of business. And even if you retain some of your IBOs, it doesn't mean they will purchase anything.
So even if someone tells you that the business is simple, it doesn't mean that you will be successful. Remember, breaking rocks with a hammer is simple, but not easy.