Obviously not every foreigner that owns a business in the Philippines gets murdered although they are probably at a higher risk than those who don't.

Perhaps a key factor is how one interacts with the locals and the ability to diffuse a possible conflict if need be. Maybe Jake's never had a problem because his social skills are very good. Could be the Scottish charm.

I think a lot of it boils down to respect. For instance if a foreigner comes to the Phils thinking he's the lord and sees the locals as peasants he's going to make enemies because he doesn't show them any. The same could be said about those who open a business without a thought for similar businesses in the area. Muscling in on someone else's turf will cause friction, not just in the Phils, but anywhere.