Sure the rich have gotten richer, but the poor have had their problems eased and the middle class conditions has become prosperous. You seem to be trying to hide from the past as you posit that liberal programs don't work and 50 years ago doesn't count. In my view they have, but renewing or improving them has been made more difficult by conservative opposition. Research GOP votes on SS, Medicare, and Obamacare. As the years went by the votes disappeared from conservatives til none voted for the ACA. Yet these programs are still popular and with Americans. Obamacare, increasing in popularity, would have done better if it allowed people to buy into Medicare, but that was not possible due to conservative opposition.
You can't ignore this history. The fact that programs of years gone by helped things is what prompts us foolish liberals to come up with ideas for our times. The record of how unemployment went down after FDR started spending on programs, and how it spiked in 1938 after he stopped spending motivated LBJ 30 years later. His programs decreased the poverty rate in the 60s. Years later, Obama tried the same under the stimulus program. Trump now brags he will soon imitate his predecessor with his own stimulus, aka infrastructure, tho no doubt with a bias towards increasing corporate wealth.
Federal housing assistance post WWII created enormous middle class wealth (tho often blacks were excluded from those benefits.) Discrimination was eliminated more recently. More recent programs help people get housing now. On a personal level, when I was unemployed and declared uninsurable due to a pre-existing condition, a limited government program got me insurance and saved me from bankruptcy or worse. This wasn't 50 years ago, but 15. Now I have Medicare, rumored to be a government program, and unlike how Reagan predicted, I don't have to tell my kid what it was like "in America when men were free."
Yes, all this stuff happened 50 or more years ago, and should be updated/changed for today's time. But they most often came from liberals and were opposed by conservatives. The pattern continues. I now travel more easily in my area due to improvements coming from the Obama stimulus program of less than 10 years ago. More people are insured thanks to Obamacare and its accompanying expansion Medicaid, an update of a 50-year old program.
Even the more conservative GOP has drunk the liberal Kool-aid... They wanted to do nothing and got Obama care. Now, tho there is no new plan as yet, they have to say repeal and replace, instead of just repeal. Welcome to the party. We promise not to call it a liberal program.
But in fairness, maybe I am not thinking about what's on your mind and we are talking past one another, not unheard of these days. I used to have a prof of undetermined politics, who if he heard you say something like "liberal programs don't work," would say in a flat voice, "Name three." So, respectfully, name them.