Imagine a Lightning channel that grants one party physical access to the other's goods because that party can provide a QRcode that unlocks the physical goods being provided by the other side
Imagine a relationship motivated by wanting to keep that channel open in perpetuity.
My cleaning service and I could have a Lightning channel. Their QR code would open my house and update the channel status with my payment.
At 1000 sats/vbyte on-chain, they wouldn't dare behaving in a way that would jeopardize our channel or cause me to close it.
High fees on-chain encourage a level of cooperation between Lightning partners that we've never seen in business outside of legal threats or other coercion.