I saw that, was it you that posted that earlier? If you think it through the more unprofeesionally installed equipment that we have out there the more service work that will be generated by bad installs.
There goes a lot of that money they saved. It generally won't last as long in many cases simply due to it being grossly oversized, and improper installation procedures.
If everyone installed top of the line equipment, did premium installtion work we wouldn't have a lot of the service work that we get now.