induce, encourage to come
徠 centers on drawing someone or something toward you: inducing, encouraging, or inviting to come. The given meanings are closely related applications of this idea of attracting arrival.
徠 combines 彳 (movement, going) with 來 (come), suggesting the idea of causing someone to come or inducing arrival. The component 來 likely contributes both sound and meaning.
The left side 彳 represents movement, and the right side 來 means 'come'. Together, they show someone moving to make another come: inducing or encouraging arrival.
For ライ, imagine a person waving a bright light to induce someone to come closer: light -> ライ, and the light draws them in.