There’s always money/wealth in the economy. If the workers don’t have it, someone else does. Find where the money is, and tax it. Then redistribute.
It’s not a hard concept. It’s a question of the political will. We know what to do, but will we do it?
We already do know where the wealth is and we aren’t taxing it. I think we know the answer to that question. Systems are only still functioning because there’s a dribble of tax revenue that still comes in. But we are already seeing schools lose funding and roads crumble as tax revenue hasn’t grown as fast as costs or populations. I don’t think it’s going to get better, because you have to be rich or have rich allies to get elected, so I don’t know how we could create different tax laws.