no and no
Software very very rarely has enough of an impact to change the market. I don't think Home is even worthy of a mention in that category and Brawl is (as I've said elsewhere) on the lower end of what could possibly have a long-term impact. But I still don't think there will be a long term impact from Brawl..it will obviously boost sales for a few weeks provided extra units are shipped but beyond that it won't do much.