You cannot really start "small" in that area. Quickly, you will need massive amount of resources to scale up. And the access of such resources, well in the US,

You cannot really start "small" in that area. Quickly, you will need massive amount of resources to scale up. And the access of such resources, well in the US, you have vanguard and blackrock, mostly, and they already have some significant interest at keeping that steamingly toxic Big Tech as is.