L2 onboarding fees

So let’s address the elephant on the room. How does ethereum onboard millions of users on to layer 2? Gas fee for layer 2 onboarding were expensive a year ago about 15 bucks to execute smart contract. I assume it’s considerably more to get on layer 2 now. Vitalik is promoting more layer 2 usage but normal users will not pay 50 dollar fee. How is this problem going to be solved?