"right now, the amount of "free money" in this context is 0. According to you, politics would raise that number. Why is it still 0?"
A very silly thing to say, but I'll run with it. It's still zero because the program doesn't exist. And it doesn't exist because it's so transparently disastrous that the political system prevents a blanket free-money program from being enacted.
But, as I said, we can see the mechanism at work in other, existing programs. Public sector union pensions and veterans' benefits are classic examples. Another example would be the grain ration in ancient Rome, where the people of Rome (the city) were given first subsidezed and then outright free grain. Under the Republic, politicians would use this program to sway elections (yes, there were elected offices) in their favor. Under the Empire during the principate, the emperors used it to draw still further power from the Senate and shore up their popularity with the masses.
A free money program applied generally would suffer from this same effect. Eventually it would reach a dollar ammount where working would be entirely optional for someone to have to work to get the resources to provide themselves an adequate life. This means fewer people would bother working, which would lead to economic collapse. Put simply, a program like this hasn't been created because policy makers realize how dumb of an idea it is.