Will the investors of the project make a profit? If so, from what? It turns out that to store files on the cloud, you will need to pay, perhaps monthly. Do investors make money from these payments?

How can investors make profit from the payments of customers? You dont.. you can only make profit from that if you are a host, and you give your spare space to the network. Investors can only profit from the rise of the value of the token, as in every coin out there.
Have you never heard of dividends? There are tokens that pay or will pay dividends.