By John Revill ZURICH (Reuters) -Swiss voters on Sunday backed proposals to make global TV streaming services such as Netflix Inc, Amazon and Disney invest some of their revenues generated in Switzerland into domestic film-making. Just over 58% of voters backed the proposal, according to the final result, in one of three national votes held under the Swiss system of direct democracy. Switzerland will become the latest European country to introduce such measures to support local TV and film production and boost locally-produced content. “This result underlines the cultural importance of film-ma…