Pros
Offers good commission opportunity for motivated sales people and middle management. Service provides good value to customers, can feel good about what you're selling. Talented sales people can make some decent money with soft selling for their first 3 months, extended to 6 months with hard selling practices.
Cons
Commission structure sets reps and managers up for failure long term. Sales people are on the hook for retention of their sales but no additional resources are given to accommodate and no incentive to support other people's sales, compounded by the fact the model caters to customers on tight budgets. Unrealistic expectation for perpetual growth drives a culture that encourages desperate sales people to make bad sales or outright fraud. Corporate disconnect from front line work.