Authoritarianism didn't work in the past because it was too hard to control that many people. You simply didn't have the scale unless you were willing to roll tanks down city streets, and even then all it did was buy you an extra couple years, maybe a decade or two. Eventually, someone always got close enough to end you and then it started falling apart.

Technology has made it not only possible, but easy, to control a lot more people. Freedom generally, and democracy specifically, are the exception. Might-makes-right authoritarianism is the default human condition and I think we're seeing a regression to the mean. I don't even mean in the last few years or whatever, I'm not making a comment on any country's government today. But look at the last 30-40 years, and imagine what the next 30-40 might look like, and I think we're going to look back on today fondly as when we had more freedom.