Why do they need 30 cameras? If they are going to play football let them play. Control of the game and outcome. Not rocket science.
They need 30 cameras so they can show every single dopey thing in the stadium. At least 10 of those cameras aren’t even looking in the field.
Replay exists to get the call right. By the time he got control he only got 1 foot in bounds. That’s not a catch in the NFL.