Cannot watch/stream directv on my computer 2019

Still a nightmare after 2 years.  I thought I would revisit this nightmare since I keep getting prompts to watch something from DirecTV on my computer, but can't ever accomplis it.  What makes this so difficult? Will this ever be fixed to where you can stream DirecTV from your computer in another room?  1st prompts you to install the DirecTV Player, which cannot be certified, then there's the flash errors, then there's the this content is not available to stream errors.  Why is it you can stream then through other services?