Why I can't static_cast char* to std::byte*?

I know I can use reinterpret_cast, but it seems weird that I can not go from char to "universal" type like std::byte. Is this just unfortunate mistake/limitation, or there is a reason for this?

Example:

int main(){
    std::string s{"abc"};
    std::byte* ptr  = static_cast<std::byte*>(s.data());
}