Well the Swiss have a population just over 7.5 million with a great deal of direct democracy - or referenda. Given their neutrality, independence, standard of living with few natural resources and general "good bloke" international status, I don't think they are finding their citzenry too much of a barrier to informed decision making.
You could certainly argue that the "experts" have made such a dogs arse of most, *cough*, democratic countries, that the wisdom of crowds really isn't so bad after all. The elite sneer 'populism', the people say 'democracy'.