What can be done to mitigate risk to property from large trees other than removal?
Your question is a bit broad since you've provided very little detail about the situation, but hiring an arborist to guide structural pruning would almost entirely eliminate risk of blowdown. 

We have large white oaks in our neighborhood, and they're rarely blown completely down, but they do tend to lose large, long, high branches in severe storms. Shortening or removing those would substantially reduce risk. Obviously there's still cost involved, but perhaps quite a bit less, and you get to keep some beautiful trees.