Its their own fault they risk thier own money without even ask people or search it for thier own good to see of the site is scam or legit.
Correct , the laziness will leads you into the hell and be broken + regret for get scammed and absolutely they're fault for be lazy search the site before invest their money. Bought site , shady activities , unresponsive support ticket and etc are commonly the scammy site do.
It only takes min 5 minutes to do this , and it won't be affect with you but that's worth it for your money.
well, that is not always true!
for example people who lost money on many of the casinos when they invested in them like moneypot for example did research about it and moneypot or any others are not scam at all.
or for example those of us who lost money on bitfinex, cryptsy, btter, mtgox,... did our research and apart from some signs in some cases they weren't scams but some day they decided to run away.
what i want to say is that investment is risky and there is no escaping that, and i think we should keep it in mind after we excluded the scam ones from our list.