Any entrepreneur wanting to start a business should be ready to take risks though.
I think you could build a DC for less than millions, it would still be in the hundreds of thousands range, but doubt it would go near millions.
Not talking about something that is the size of EV1, SM and other large DCs, but one that can house a few thousand servers at most.
It could bring in good profit, wouldn't require as much of a capital and wouldn't need so many workers to run it.

Still nothing I am planning yet, but just something I am interested in knowing more about