The truth is that Bammer and all the other elite teams (or mediocre teams w elite staffs) have a guy dedicated to watching all those and getting actionable intel.
Id like to see something on film that appeared to be progress but didnt Driskel look good on film and LDR complete 100 percent of his passes in the O&B. So even if they televised it all and you saw it, would it matter? Or would you still need to see it on the field in September to believe it.
We are doing the right thing in this case. In today's CFB you cant have open practices.