This is an interesting take. It reads like the NFL wants to protect the interests of CBS and Fox, who only air games in a market that is designated by the particular game in question. Then, that game is blocked out of that broadcast area on Sunday Ticket. So CBS and Fox would not be losing any money.
Example: I am from Massachusetts. I live in the Jacksonville, FL broadcast area. My team is the New England Patriots. Yesterday, that game was not available to me in my local market. So I would have been able to watch on Sunday Ticket. Fox (who oddly was airing a game of two AFC teams when they normally handle NFC) did not have an afternoon game on in my local market.
The Tampa Bay game on CBS was aired here. So I could watch that. If I had Sunday Ticket, I would not have been able to watch that game on Sunday Ticket instead of over-the-air.
So what I REALLY think they mean is one of two things.
The less likely? Not having Sunday Ticket, I can only watch the Jaguars game when it is airing. I can't make a choice to watch an "out of market" game (say I wanted to watch Colts/Vikings) instead of the Jags/Cowboys. Well, Sunday Ticket would allow me to do that now, so that doesn't pass the "protect the interest" of CBS/Fox. My options today (watch no game if I don't want to watch the Jags, watch the Jags, or subscribe to Sunday Ticket and watch an out-of-market game) would be identical next season if Apple picks up Sunday Ticket, no matter how they charge customers.
The more likely? The NFL wants to "protect the interests" of their contracts with CBS and Fox. They don't want Apple to "give Sunday Ticket away" on their $6.99/mo service, thus devaluing what CBS thinks is worth paying for the rights.
That is what I think is the real "protect the interests" - you know, like "protect the shield" means that the Ideal Gas Law, and laws of physics do more harm to the "integrity of the game" than rape, domestic violence and concussions.