There are tons of options for that, mainly energy storage such as batteries, hydro, and green hydrogen. Nuclear is not needed and too expensive among other things.

It’s because the education system is utterly outdated across the world. No digital literacy, media literacy, or health literacy in the curriculum but lots of things you’ll never need and forget to never be useful again within a few months. Studies should investigate things relating to this subject.

It’s also because of the quality of search engine results but both are directly linked, people need to learn how to use search engines etc.

Because people are not so interested in reinventing the wheel a thousand times when there could be just 3 optimal open source solutions.

Also many products are plain useless or even harmful to society such as mundane noneducational distracting addictive mobile games.

If you can glance over 100 posts in 10 seconds that is of little importance. The issue is that nobody enabled good ways to do so. Also people should rather devote their times to priority purposes such as editing Wikipedia or developing open source software that is not some niche repo but e.g. MediaWiki or Lutris.