Easy one for me, the coverage of college football compared to when I was in my twenties and younger. Back in the day ABC was the only national network carrying games, and it was usually two games per week, on Saturday. One game was regional, the other national. I can remember as a youngster sitting in my Dad's Buick trying to pick up distant radio stations on the car radio late on Saturday night just to get scores from late games, especially those in the West. WBAP in Ft Worth was one of the stations I remember, as well as WWL in New Orleans.
Now you can see at least fifty games a week, including some weeknights, on TV, plus others are streamed and/or easy to listen to on satellite radio or various apps.
Add to that all the websites, blogs, fan boards, etc., and there are almost unlimited sources available to watch/follow the sport.