I think there are some unwritten and ethical rules how we should respect and treat ourselves. I have an own Facebook Group for my Fancy Product Designer solution. Today one of my employee who is also in the Facebook group got a message of the co-founder of a competing product designer solution which is sold on codecanyon. In this message he is promoting his solution and the today sale discount for his solution. I even noticed some spams in the last weeks in my FB group about this solution.
How would you guys handle this behaviour?