Granted, it's hard to predict the future. But we can speculate. If the forecasts of numerous bitcoiners come true, that is, if indeed bitcoin is worth several hundreds of thousands of dollars, then, the fees will have to rise proportionally. On chain transactions will become very costly, for example, tens of thousands of dollars. By then, of course, the LN (lightning network for off chain payments) will be fully operational, so nobody will have to transact on chain. Probably on chain transactions will be reserved to the really wealthy people. That is one possible scenario that may come to mind.