Cloudmining websites are proven to be scam decades ago. No, there isn't a single cloudmining business which is profitable for its users. The only way you can profit from them is finding more users for their services and they pay you fees for that effort. As you know, that's called "ponzi scheme".
Yes....They way I recall it, they started off as a scam and just continued on scamming. In the beginning, they caught quite a few people off guard, but now days most experienced users know better than to even give cloud mining a second glance because they learned their lessons way back....cloud mining still catches the noobs, however, which carries on the tradition of learning the hard way.