The reason these "cloud mining" ponzis can last for so long is because they are the exact same thing as any other ponzi, just paying out the few that ponzis payout extremely slowly.

As an example, a lot of ponzis that you'll see listed on this board have a minimum investment of 0.001 or 0.002 - some even have 0.01 btc as their minimum. The minimum on cloudmining.website is 0.01 as you must buy at least 10 GH/s.

If you calculate it, an investment of 0.01 would get you about 0.0002 btc a week meaning it would take over a year just to earn your investment back. The ponzis listed on this site will give you a return of 0.01 for as long as 100 - 200 hours. Those usually end of scamming quickly because people revolve around (A) profit and (B) time (quickness).

So some people will make massive investments in sites like cloud mining but because the reward will be so low, they can keep it around for much, much longer attracting more of those massive investments. I'd say cloud mining in general is a more profitable scam for the admins, so I guess a very lucky ponzi.

I suggest you don't actually invest in this. It's a waste of time and money. No, a site with the domain ".website" does not actually have data centres where they mine bitcoin. They just use new deposits to pay the old ones until they are satisfied with their earnings. Then they run.