There will always an attempt to scam people using or by cryptocurrency because this is a multi-million dollar industry, and scammers are fully equipt and they are professional enough to make their project looks legit and in compliance with existing laws, so we need some form of regulation, but will not undermine, the cryptocurrency decentralization.
imagine from the beginning of 2018 there were many scam cases that occurred and now the CEOs or founders of the project are still free to roam wherever he wants without clear rules, the perpetrators of the thieves or the scamer should get criminal penalties and there must be regulations clear.