It's great when you don't want someone in power for too long (eg. a kingdom), but mostly bad for actually doing things
. One side can assemble a plan, then the other must
nitpick and criticize the plan in order to satisfy their ideology or because they are the opposition, and therefore must be against.
If I get you right, a strong leader, even a dictator, is usually needed to get things done?
Maybe that works in many countries (like North Korea), but not everywhere. I think it is a cultural thing whether a nation yearns for a lead figure, a strong leader. To me it seems that e.g. here in Finland president and prime minister are always only seen as civil servants, nothing more really (ok there was certain long time "strong president" in the 70s, but after that...).
I think many Western democracies have not fallen into the pitfall you mention. I feel that e.g. Estonia has done all the right moves (at least so far) to survive in global economy, and I don't think they are a kingdom or dictatorship. I'm sure there are other good examples too. In democracies, the decision-makers must get people acceptance to hard decisions, and in some democratic countries that seems to be easier than others. Also, I do feel some countries by default pull more together than others. Take Japan for example, and how they coped with their tsunami and nuclear disaster: people lining up quietly and in order to get food and help etc. In some other countries in similar disasters, there has been total mayhem, Haiti for example.
In relation - countries that have deficit problems today didn't get them over night, and clearly they didn't just happen to come by as the economic crisis exploded. They were in fact produced over decades of misspending and the product of multiple parties in a parliament system, by witch most western countries adere.
The problems are not similar in all democratic multiparty countries. I gave tiny Estonia as a prime example from Europe, they don't have huge deficit even though they were also clearly hit by the crisis. Maybe, as long as people in general don't feel injustice, they are happier to work together for the common good?
If not, then I guess strong leadership is needed who will make all opposing voices quiet.