There will be security firms that specialized in handling bitcoin security, or education to increase the user's awareness of security risk
I think wallets will become more secure over time too. Both hardware wallets and desktop and online ones. I think maybe biometrics with 2-factor such as mobile phone will prevent scammers from stealing funds but as with any payment system there will likely be weak links.
Because sending your money with a biometric 2-factor ID will still not stop sending money to fake websites, lol. Good in theory, but just like people look for the https nowadays, there will have to be a sign for trustworthy websites, they'll probably have to prove they're trustworthy and not a scam somehow to get approved by something/someone/gov't? before people trust them.....
You can only guide and protect people so far before they have to take care of themselves. If people send money to phishing sites then there's nothing you can really do about that other than they get a costly lesson and they hopefully wont do it again.