Your assumptions make no sense. You say: "4) Nothing changes "scenario A". Thriving fee market. Tiny set of wealthy users are able and willing to pay massive fees." Current fee is 1 sat/vByte and transactions are the cheapes of all monetary networks. People move millions for less than a buck. So if nothing changes, as you mention, where did you get the idea about massive fees? Especially with high number of transactions which is representatvie of thriving market? 0 logic.