https://www.quora.com/Does-the-NBA-League-Pass-offer-a-playo...
If the team is on a national broadcast, it is also blacked out.
That being said, I listen to the finals on the local radio broadcasts via the NBA app because those are never blacked out.
Doesn't sling require a cable subscription?
As the other poster mentioned, like Netflix, you need an internet connection. If you want to watch it on your TV screen, a set-top box like a Roku or AppleTV is worthwhile but you could always plug your laptop into the TV instead.
And it starts to add up and we're back to where we started.
Also, I believe Disney+ will fail because there are not enough Disney diehards who want a subscription specifically for Disney shows. Disney shows get watched because "oh, cool, they have Disney."
Ergo, they don't go looking for it.