peaked

Worldwide birth rates have peaked. The largest cohort of babies the world has ever seen was in the 80s.

Inflation peaked at 27%. The government went bankrupt and had to go "cap-in-hand" to the IMF for a bailout.

Google, for example, peaked in 2007. Part of this was the highs of the market but part of it is also this shift from blue sky potential to viewing the company as a source of income.

Civilization pretty much peaked when we figured out how to blast text from the other side of the planet to your screen in 150-200 milliseconds. It's been downhill from there.

Last time being the previous frenzied Bitcoin price hype bubble that peaked at 31$. No one fears that Bitcoin will crash to 0/pennies anymore once the price stops climbing, at least not due to standard market forces.

Gnome has peaked. No point supporting people who are unable to grasp the idea that they work in a software-community and that pieces, even ones they don't use or make, will need to fit together.

Using nearly any measurement, even the bogus CPI from the Feds, you find that wages peaked in about the late 1960s to 1970. And meanwhile, we've had to accumulate vast amounts of debt just to maintain these levels, so in real terms the standard of living has plunged.

My ability to play Starcraft well may have peaked at 24, but the leaps and bounds in my intelligence/acuity/personal development began at 24. Edit: above comment based on OP's original headline

You may be right that Facebook has not peaked, but saying Facebook overthrows countries is kinda like saying the inventor of the quill wrote the Declaration of Independence. Civil dissent overthrows governments.

The pendulum has peaked at globalization and now it's swinging towards isolationism. Whether we like it or not borders have been drawn along the previously wild-west-like internet, and it may take on the form of virtual Berlin Walls.

In fact, 1932 had shown Hitler that there was a possibility that support for the Nazis had peaked as their showing in the November 1932 election had shown. Anything other than a huge endorsement of Hitler and the Nazi Party would have been a disaster and a gamble which it is possible that Hitler did not want to take.

Data for diamond imports in the early part of the century are not very good, but Brinig's conclusion from such information as she was able to find was that the practice only became common in the 1930's, peaked in the 1950's and has since declined. Her explanation was that the engagement ring served as a performance bond for the promise to marry.