Cryptocurrencies like Bitcoin are not controlled by the state. That is one of the key aspects of them according to proponents/fanatics. Personally, I think normal money works fine and does not need replacing, but I know I am too steeped in its use (and not knowledgeable or interested enough) to make an entirely unbiased judgement.
Actually there are very few activities that add to the wealth of a nation. The big ones are: farming, mining, construction, and manufacturing.
That is based on the idea all wealth is material. But knowledge, organization, institutions, ethics, culture, cooperation are all wealth.
Imagine a group of expert engineers, chemists, botanists, farmers, teachers, carpenters, nurses, etc. dropped on a desert island and left on their own to survive, compared to a group of social media influencers, QAnon devotees, socialites, and professional video gamers.
Check back in a year. Given the same starting physical resources, which group will be more wealthy?