The primary markets can get it OTA, but the secondary markets are out of luck, which makes zero sense since the games can be blacked out in secondary markets. Eg. Rochester and Syracuse are secondary markets of the Bills. If the Ralph doesn't sell out, Rochester and Syracuse get blacked out along with Buffalo, but only Buffalo can get NFLN/ESPN games OTA. Rochester and Syracuse fans without cable cannot see the game.
In the parent's case, if they lived in Providence or Worcester or Portland, which are definitely Patriots markets, it wouldn't be on OTA :s