Regarding the investment part (not the marketing or insurances obv.) how is that different from what an investment bank does when it invest in long term products? If the funds are in e.g. long term bonds, real estate, mortgages... the investors can't get back all of their money all at once, it will take years to mature, also the capital they are required to hold are only a few percent, so they are also technically in…
Something that definitely can't be said of some of those fantasy funny coins.