Considering how unsuccessful WannaCry's ransomware seemed to be, raising such a small amount of money relative to the number of computers that they infected, it's possible that less resources are going to be used on creating these exploits in the long-term future.
The publicity of ransomware attacks will stay super high because of the possibility that it could be used to infect a growing number of individuals and important services, but meanwhile people will carry on keeping backups and ignoring it most of the time. It could help to encourage taking more regular backups.
Maybe if they weren't so greedy, people would actually pay it. Honestly, I don't know whether I would bother with a backup if they asked for $10 or so.
Yeah, most people do not have information in their computers worth that much, at best they have some pictures that are impossible to replace but that is it, but I think this is precisely why they are asking for such a big sum of money, only people with valuable information are going to be willing to pay for any information in their computers and the rest are collateral damage to them.