The internet itself is often cited as the cause. "Social Medial"

Income inequality is probably more likely, with internet making it easier to see.

In the US, while economy is "good", it ignores a large % of population struggling, and if they are on Social Media, they see the differences.

Then popular uprising, and boom, revolution, dictatorship.

The people that are suffering, don't have the bandwidth to think about "not ideal" versus "terrible".