Some of them, unlike the ones you mentioned, are not mining, just selling.
The answer that comes to my mind is immediate gain. Cloud mining operations get the money upfront, just like it once was with pre-orders. Nowadays less and less people trust in pre-orders, so the sellers are offering cloud.
Either way neither is making money, getting frustrated, investing in some PoS scamcoin due to frustration with PoW and than possibly leaving the crypto-currency scene altogether.
Lets be honest. Someone show me one example where you can turn a profit mining.
Why do you people sound so desperate ?