Epg guide

I just don’t understand why all these major Iptv services don’t invest in a proper guide. Instead of making customers use a 3rd party app like Implayer, tivimate, or Iptv Smarters pro. Gearsreloadedtv had the perfect guide. Why can’t services take notes? I mean I know they are making enough money to pay someone to create them a proper guide for their service.