I'm not sure, it depends on how good the UX and trustless/low trust custodial services get[1]. I don't think crypto will ever be for "my grandma" for example. But I could see it being easy and safe enough for my dad, who knows what phishing is, would understand what private keys are, etc.

[1] This is too long to explain but basically something similar to multisig and time locks to add extra security. Nothing like this exists at least easy to use right now.