where is the ROI of this type of investment if you don't mind to share your insides a little. If you have a few million euro to throw after it I think it can be good, but to be good you need lot's of customers??
I'm invested in a few datacenters and the ROIs are fairly good. There is a large upfront capital requirement, but if you can meet that then you can expect ROI within 3-4 years depending on how much you do in marketing and your overhead costs. All in all, no complaints.