Keep in mind this is EPIC which no doubt makes much more money selling their engines than their games.
What's written in between the words here is: Next gen will only double your costs IF you use UE4 otherwise expect your cost to rise by 4-5x's (death for anyone).
I think F2P is going to stop these super expensive AAA games from happening. He's right, if you can get a F2P AAA game (by todays standards) or a next gen AAA title for $60-70, likely you will at least try out the F2P first and if it's good, it'll hook you and drain your wallet. Even EPIC is making a F2P game...