Everyone became interested about bitcoin in the beginning is simply because it is an open source software model and if it was a closed source no one would care to invest in it in the first place and like lauda mentioned , Producing any amount of money very quickly and tracking the users are an issue that will come with closed source or centralized structures.
I honestly think we are better off with Bitcoin as open source. The fact that no one can claim it or patent it means we don't have to worry about government or organizational elites fucking "commoners" over all night and all day just because they feel they are above everyone else and thus deserve to be able to steal from everyone else. Open source code is very important for me as far as using Bitcoin goes. I don't want the government or anyone to think they have a right and have the power to Snoop around my transaction logs without my permission. Bitcoin in a form that enables one governmental or organizational entity to have a monopoly over bitcoin would be worthless.