I had to look up the FAST terminology, which appears to be a new media thing in the last few months. Basically, it's the equivalent of whatever the heck Amazon is calling the thing that used to be IMDB TV: A non-stop stream broken up with commercials, but not being broadcast over traditional airwaves or appearing in a cable channel line-up.
The advantage for the corporations appears to be a bigger slice of the advertising pie (I cannot imagine that Hasbro has an ad team, and is probably getting some vendor to handle that in exchange for a cut of the proceeds), but for the consumer, it's about the same as watching something on Twitch.
Faster, Purple Worm, Kill, Kill! which I first heard about on Facebook, when they were soliciting audience members in the LA area, sounds very good, but I hope WotC doesn't do the thing Dragon Talk does, and assume that every actual play podcast is worth elevating. They should be reaching out to Not Another D&D Podcast, Nerd Poker and other shows with professional performers if they're intent on making this a commercial success. I'd also look at the content producers forging swords and the like and get them in the mix.
Good to see the cartoon is coming home at last.
EDIT: They're definitely going to stick Dragon Talk and all future D&D Live Events on there too, aren't they?