I have no doubt the liquor restrictions in Pennsylvania (and New Hampshire, and in a dozen or so other states) are largely corrupt arrangements between the state and various private interests. Still, moralistic arguments have been offered in their defense. If you're a college student in California and New York, the state now places incredible restrictions on your sexual behavior. If you're at an institution of higher education in those states, your speech is heavily policed for political correctness. Heck, if you're in any sort of public position, even private monetary contributions towards unorthodix causes will lose you your job. You can't buy sugary soda. Even getting a job at a university requires a background check to make sure you're not a pervert.
Meanwhile, drive any interstate through the south, and you're bombarded with billboard ads for X-rated videos and sex shops. Most places don't prosecute prostitution except when it's out on the streeet and creating a public nuisance. Lincoln's own decidedly liberal police chief seems to have given up on Craigslist hooker stings.
My point is this; the places that were once socially conservative are now socially liberal, and the places that were once liberal are now becoming puritan. You don't need a notarized affidavit to have sex with a classmate in most of the red-states; in New York and California, it's safest to be accompanied on a date by a constitutional lawyer.
Anthony Burgess (Clockwork Orange) wrote a book about this once, called The Wanting Seed. It was written, presciently, in the early 60s, and predicted how the swing towards libertinism would bring about, much later, a reaction. So as liberals once preached free love, now, they're ring-fencing love with a barricade of rules. As they preached access to drugs; now they want to ban everything you might ingest that could conceivably do you harm; as they once championed the "Filthy Speech" movement; now, where they reign, speech requires walking on eggshells, lest you offend one of a myriad of hypersensitive identity groups.
Just as in the past, religious nonconformism led to puritanism, and the fight for women's rights led to prohibition; now the 60's revolution has led to the nanny state. Liberal thought is a giant oscillation between libertinism and prudishness. Meanwhile, conservatism follows along sheepishly, out of phase by a quarter cycle. As puritanism becomes orthodoxy, conservatives will adopt it, and then become angry as liberals suddenly decide libertinism is once again for them.
Right now, the liberal puritan wave is still building, and conservatives are about as libertarian as they'll ever be. All this will change.