Your original argument basically applies to everything, why shouldn’t the government just pay everyone’s salary since we’ve all benefited from some subsidy. 80-90% of drugs are discover by private companies doing research. Also, i think you would find that those scientists that you claim could just be paid by the government would leave those jobs when they inevitably have an idea that their risk adverse bureaucratic boss doesn’t want to pursue. Then they will find some rich fiends to invest and start companies themselves and we will be back to where we are now :). Unless you force everyone to work for the state... Anyway, I don’t feel like getting into the capitalism vs socialism but if you do a bit of research I’m sure you can discover why the current model works.