I love how ABC, broadcast free, over the air, to my house, on public radio waves requires a CABLE SUBSCRIPTION to access.
To cut the cable you need to sit down and study your needs and come up with a complete strategy . It can be done but requires some planning.
I understand that ABC is subscription on Apple TV, but any cable cutter really needs to consider OTA as a starting point. Where I live, OTA is fantastic, 24 HD channels. I get all networks, (ABC, NBC, CBS, FOX ME, MY, ION, LOTS of PBS, CW, ION, THIS, QUBO, RTN, and several Independent channels).....
Next up, I have an FTA Satellite system... Buy Once, No a monthly fee. Over 500 channels. Yeah, lots of them are crap but there are a few jewels (all in English) that I like ie. CCTV News, Russia Today, ABC News One (1&2), lots of overseas sports (Soccer, Rugby, Aussie Rules Football), Ebru TV (a great channel), Montana PBS (the best), Tuff TV, CNC World (My fav news channel), and of course QVC and things like that. There are lot of great wild feeds that pop in and out, and you can generally find sporting events in a wild feed (NFL, NHL, NASCAR, etc).... I have a small C/Ku system (6') and have less than $500 in everything...
Lastly, you want your content from the net. Apple TV is just one way, ROKU, or a home media server. - there's lots of options. No one is better than the other IMO. It's what works for you. I chose ROKU and have never looked back. I run PLEX on the ROKU with an old Dual Core PC which runs fantastic. I even like the FREE ROKU stuff (Crackle, the old movie channels, NASA etc)
I cut the cord 2 years ago now and have never missed anything. The only thing I pay for is streaming Netflix. What I have may not work for you, but I strongly suggest that everyone plan out their entire system before just starting buying stuff.....
Being cable free is great. You see a lot you would never have a chance to see normally, and save tons of cash!