The point of that new team is for Platinum to self publish their own games, not to convince other publishers. Babylon's Fall budget and direction was guided by Square Enix so it doesnt have much bearing on what will come next in that department, besides giving even more incentive for PG to decide for themselves how they want to make their games.
Actually it does. Gamers have become alot more vary about their games which will be even a bigger problem if BF gets shut down within its first two years. BF also was supposed to generate revenue for years, that's the very reason for GAAS projects in general. They could get into a very problematic situation if they don't find another revenue stream immediately. Could become even worse than after they had to abandon the Scalebound Project. As much as I like Platinum Games, they can't compete as an independent publisher yet.