Well, that just isn't true.
No problem. Who is going to pay for the equipment, the licensing, the installation and operation? Who will pay for the daily maintenance and security? Then who will an the monitors? How will they communicate with those on the field and, btw, who is going to pay for the power used? And then there is the storage of the data.
Now, mulitply that by every field in the country. Be prepared for each tournament to limit the number of teams which will increase the cost per team, substantially.
It's hard enough for us to get someone to man the scoreboard.