It's interesting really. I've met so many different "types" of people in the industry. They are very distinct types. The few extremes that I have seen are:
There is s die hard. They have a tendancy to get involved with one company, learn how to build that company, and stick with it. They may go through a few different companies to find the right company, but then when they find a "home", will stay there for a very long time. I've also experienced people that when they get involved in a very good "system", they will stay in that system, travel across the country for meetings, and keep plugging away, even if there is zero movement or profit in their business.
Then there is the company hopper. They change companies every 6-12 months. Don't get me wrong, this is not necessarily a bad thing for them. These are people that see the opportunity with each new company they are exposed to. They find the next greatest thing. The majority of people that fall into this category, end up company hopping, spending a lot of money on signups and initial products. They have a large inventory of products from companies they used to be in. They will contact their friends and family with the next great opportunity they have found and are convinced this is the one. Understand, there are people that make huge profits that do fall into this category. However, you need a very specialized skill set in order to accomplish this. Those that can build groups very rapidly, do very well in this business model. They move to a company, build their group rapidly, and once things appear to really get rolling, move on to another company for one reason or another. Some of the people they had in their old company will follow them, and they will begin the process all over again.
It was interesting a few years ago to spend some time with an individual such as this going through some companies. We were wined and dined by many of the companies we went through and I could see where it could be a great lifestyle. However, we found it just wasn't for us. We are more "home" and "system" people.