A few quick thoughts:
While BC is far superior to recruiting local talent lately, BU still gets their fair share. Both of these schools would probably "protect" this area by NOT scheduling a game with PSU even though PSU is probably a very minimal threat.
Also, if PSU did want to come in and get some exposure in the Boston market and did so with a willing participant like NU, UML, Merrimack, etc... how much exposure are we talking? Ok, it sells out the game. So you have a few thousand people, mostly local, going to these games. It's not going to get on tv. Even a huge marketing campaign in the Globe or Herald to sell the tickets just gets the building filled and it stops there. Writeups on the games would be about 2nd rate local teams against a startup Big Ten school that may very well be terrible on the ice and it could still be a beatdown. Would that get more press than say a BC or BU writeup when they play on the same night? Doubtful. How much exposure would it really be? At the end of the day, most of these kids that get into the arena to see PSU will still want to go to BC and if they can't get in to BC go to BU and if they play for 3rd rate programs like Boston Advantage they will want to go to Maine to go play for Whitehead, who will hopefully still be coaching there for the next 20 years!