in my country tax is a way for the government to rob it’s citizens. the less paid the better.
government is bad at supervising research, unless you have a specialised agency like DARPA, therefore see 3.
it depends more on human resources than the amount of money you spend on it. give 50% GDP to a bunch of civil servants with 60% of them havong unfinished primary school education they will spend half of it on drying a local river. the other half will be cleaned by that very same river.
the question is ill-posed.
Huh. I’m sure you have good reasons, and I’m curious. Why do you think so?