There is nothing so practical as a good theory. Kurt Lewin
The Foundations of Our Practice
In short, it's because of the impact we have. CPT's in part are professionals who deliver real business value in their work. We choose to work in various areas of the field (elearning, consulting, delivery, design, etc.). For us, we chose to work in the leadership development space with an emphasis on business learning. We've found this work to be both rewarding and highly valuable for our clients.
Beyond that, the use of business simulation as a learning method has a lot going for it. In addition to fun, we have a sound theoretical basis for these technologies. A quick review of Merrill's First Principles, in reference to well-designed and implemented simulations, will show you the how and why these techniques work so well. I encourage you to have a look.
Finally, we do this work because we're passionate about it. Hey, just ask us. We'll go on and on!