My first CFI (of four along the route to my PPL...) had another
student starting at about the same time I did and he turned out to be
a very wealthy business person who eventually hired away my CFI to be
his Corporate Pilot / Personal CFI. Not long after leaving the FBO,
the student/boss hauled off and bought a brand new Piper Meridian.

For the Student/Boss, not a bad way to train...
For the CFI/Corporate Pilot, not a bad way to build hours...

Jay B