They actually do that - investment, leave aside participating in large-scale economic organization was impossible for the common man until now. It required knowing the right people and having enough money (a lot) to be able to access such investments. Keeping the financial world a closed, exclusive circle controlled by those who had enough knowledge and the means to navigate legal requirements. Leave aside making the resulting economic organizations opaque, controlled by a few officers who could easily run the organization per their own objectives instead of the stakeholders'. Without even going into the kind of economic activity that would require being an 'accredited investor'.

Crypto changes that. Regardless of your location, background and finances, you can participate in a DAO or invest in any particular crypto that you see fit. The very ease of organization that DAOs provide, is ground-breaking in itself.