It's too far to predict btc position in 2030. But I think there will be many things happen with BTC from now on till 2030. And I think supply will caped if BTC still survives.
It is a huge time period to talk about it. Many people would think that the price is going to be so high that we would never imagine. This could be a scenario. However, on the other side, there is a possibility for cryptocurrencies to be vanished if governments decide that acquiring bitcoin is illegal and every holder should be sued for that.