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.....