Yeah your right almost all investment and cloud minings are scam.. if you are newbie think wise so that you will not be scam in the future always go to in any forum ask about the site if its legit or not.. if you are in any community site may people can advise to you.. if you are just self study better check and search thrice so that you can be sure that sites are legits..
No, it's not like all cloud mining sites are scam, Bit-X (now Coinsbank) once used to provide such services at better rates and they did deliver... They closed these services as they didn't find it useful and profitable for their own side, but did they run away??? No, right???
I am not advertising anything for them, but generally speaking, that not all are scam, but only a few are legit, as cloud mining business is actually one of the most riskiest businesses...