What are examples of tech that are not being used due to lack of political willpower? Also note that if you have a working idea now that you can't realize beca

What are examples of tech that are not being used due to lack of political willpower? Also note that if you have a working idea now that you can't realize because number of your supporters is low, as the number of well off people grows, number of your supporters will grow too, and something that was not possible to do with x people will become possible for 2x.