On-chain scaling does not prevent that. In fact, it reduces complexity by removing the Lighting requirement.
Tangent: I would not recommend running lightning on such hardware. State is local to the node, unlike with on-chain scaling. That implies you need server-grade (read: redundant) hardware.
Tangent: I would not recommend running lightning on such hardware. State is local to the node, unlike with on-chain scaling. That implies you need server-grade (read: redundant) hardware.