Of course there are perhaps unintended side effects from new regulation, but "this is already a crime, we don't need anything new" isn't prima facie a sufficient argument.
If a lot of a similar type of crime is going unpunished, there may be a reason other than "enforcement agencies are lazy", and perhaps a new law can help.
Once you punish the fraud and crime, there's no problem left IMO. There's multiple of these companies competing and you should price shop before selling to one.
I use eBay's "Buy It Now" functionality all the time, in preference to the "Wait 7 days and deal with snipers" auctions. I fully know that I'm trading low-price for low-friction.
I see no reason to excuse fraud and deception, those are not convenient low friction services.
I see no reason to ignore how there is supposed to be a take-backs provision which they are merely getting around, producing exactly the outcome those provisions were created to prevent.
A private justice system, competition and a reputation system will help
a) a person needs money asap, can't wait for a cooling off period. b) a person has greedy children who expect the house as inheritance, and don't like that mom/dad has decided to sell the house and spend the money cruising around the world so they decide to declare mom/dad mentally incompetent.
None of these are new issues. We've arrived where we are (and that place is different in different jurisdictions) as we lurch back and forth between the least bad solutions.
This isn't really a story per se. People are doing illegal stuff or stuff that won't hold up in court if challenged. We have a system for it - it works ok, not fantastically. We don't need new regulation for cases like this, we just need better execution on the existing system. Better execution costs more money, and as a society we get to some balance of more taxes v more stuff slipping through.