Sometimes there's an incentive for a government, or voter base, to not learn their lessons. Using US examples because those are the ones I'm most familiar with

Sometimes there's an incentive for a government, or voter base, to not learn their lessons. Using US examples because those are the ones I'm most familiar with, just look at how long there's been a "housing crisis" due to insufficient housing in some US cities. There's been plenty of time to fix it, but policy changes just nibble at the edges. Why? Because some people don't want to fix it, or don't care, or there are some downsides to fixing it properly. Similarly, the US has a high rate of traffic fatalities among developed nations. The fixes for this are well understood, but they involve tradeoffs or design changes that many people do not want. (The US is getting better at safe road/street design, but very slowly)