It is beyond me how anybody who plays pnp and mmos is even trying to compare the pricing.
Because it's about the entertainment dollars. If I can get, in theory, 24/7/365 game play in WoW for $15/month, for double that amount, I'm going to expect double the enjoyment out of it.
Yes, it's obviously a different product, but that actually makes it worse. Unless Hasbro secretly has the world's greatest AI that no one knows about (they do not), they
cannot offer anything comparable to WoW. (Which, as you say, at best is still inferior to a decent game of D&D.)
They're not going to have a giant staff of professional DMs sitting around online, waiting for people to jump on and play.
So what are we left with?
Unlocked content that we may not want anyway (I have never purchased most of WotC's content in a given year), a hypothetical VTT, the OKish encounter builder and what else? Nothing $30/month worth at this moment.
This is like comparing leisure walks to professional racing. Most pnpers I know play roleplaying games once or twice a month, while those mmo buddies log in daily and spend too much time in worlds created by hundreds of people over years on a daily basis. Nothing an online ruleset can offer will ever be legit to comepare to this. Whoever thought this up by Hasbro should try to play both first for some time. I doubt s/he ever had.
I think it's pretty clear the folks at Hasbro are product managers who've never actually used the products in question or listen to those who have.