When I record 1080p broadcast OTA TV, it is 6 gigabyte per hour video stream,
No video stream I have watched and recorded from online has exceeded 2GB per HR, a 2HR streamed movie approximately 4GB of data, to stream 50GB of HD video will require 24HR continuous HD video stream
Yes Less hours for 4k uhd streams, but I don't think either is a realistic possibility over cellular data network, even if I could get those data speeds, I could not spend that amount of time with eyes glued to the screen,
How did you come to the conclusion you need 50 giga bytes of data stream per day??
Most telcos throttle after the plan wifi hotspot data tether limit 10 GB per MONTH, you are going to need multiple accounts/lines just to cover one day of 50GB !!
Some services will give you more hotspot data per month , none are going to allow 50GB per day average use