I am not sure if this is related but I also worked for a company that had this business model and they were desperately trying to change their business model because the money that came in from these calls was decreasing and would eventually stop coming in. It could be that they stop making enough more.

It could also be that they were bought by a different company that had this business model (something that my old company did all the time.)

I don't know all the details, but supposedly the telecom we were partnered with got in trouble with the FCC? and ended things.