I am hoping that Taigen go the same route as Mato did. Reinvest, and begin producing their own stand alone tanks. However if there truly is a relationship somewhere between Heng Long and Taigen, then what we might be seeing is just a Marketing tactic, and the symbiotic relationship between the two will remain. i.e For every Taigen sold Heng Long makes money, and both parties might be totally happy with this model.
Again, I think Taigen is marketing well and they are filling a need in North America. That being service and promotion of RC tanks, and there is nothing wrong with that.