You must be very young....The internet did not exist in 1961. Cable TV did not exist in 1961. Color TV existed, but only a few programs were in color. Now to the reasons....Roger Maris was not the person everyone wanted to break the record. Most people wanted Mantle to be the one to break it. In addition, the season had been expanded from 154 games to 162 games. Ruth set the mark of 60 in the 154 game schedule, so when Maris had not broken the record by that point, a lot of people believed that Ruth still held the record, whether Maris broke it that season or not....By the way, there were also no playoffs in 1961. The Yanks had already wrapped up the American League crown by then, so from a standings point of view, the game did not matter. There were no divisions as we know them. Only the American League and the National League. The winner of each played in the World Series. Only seven postseason games at the most. Imagine that.
I also feel that Roger Maris should be in the Hall of Fame, and think it is a travesty that he is not. I disagree with Sarge - the fact that he was (is?) the single season home run leader is achievement enough in my opinion to earn Hall of Fame recognition.