Because it's a very winnable division and they have a pretty easy schedule the rest of the way. Let's not panic just because of last night. The division most likely won't be decided until the final weekend.
Knowing this organization they'll continue to plug holes with stopgap moves and just be happy to be an above .500 team and hope they get hot in late September.
Because we're the Brewers. No amount of moves was going to make us better than the Braves. I still think we'll win the division but will be fortunate to even win two postseason games. If you're not a World Series contender, being buyers is suicide.