There are indications that there are enormous deadweight losses in many sectors, which are not fixed because of political constraints. Eli Dourado wrote a great post about this: https://elidourado.com/blog/move-the-needle-on-progress/, and I wrote a short one for Works in Progress: https://worksinprogress.co/progress-studies-the-hard-question/.

There are various different social engineering techniques from public policy, political economy and related fields for smart policy design (not campaigning) that could be tried by policy entrepreneurs to engineer changes from these inadequate equilibria, but those techniques seem little known outside those fields. I'm working with a few others to summarize them and can supply more links if people are interested.