Taxing more means more revenue for the system, thus reaching equilibrium. It’s recurring income so it doesn’t move the problem into the futur.
You can tax a company only up until a point before they leave the country, leaving people without a job and thus reducing the taxes received while increasing the welfare, and if you have a population that is increasily older you will run out of money anyway, just sometimes later.
We produce more than enough for everyone to be above poverty, to retire at 60, to have free Healthcare. However choices were made so instead of that we have a few super billionaires, people living in the street, etc etc
I don't think that having a few super billionaires and everyone above poverty is impossible, the billionaires will just need more time to reach the "goal"
To retire at 60 no, it is already impossible. To pay for everything you say you need more people on the job than retired people and you need a lower, and basically costant (I know, cynical view), life expectancy. A system where you pay retired people for more time than they worked is not sustainable.