let's take the current average mining reward of txs fees. It's around 4m sats, so we would need bitcoin at 10.000.000 usd to have it around the mining fee reward of this time, next halving 5.000.000, then 2.500.000, 1.250.000, 625.000, 312.000...so in 20 years very likely bitcoin will be worth much more than 312.000usd and mining fee of transations will exceed or be equal of today's the block reward in terms of dollars. Add to that all those folks running miners at home with photovoltaic and whatever energy we will have in the next years.
let's take the current average mining reward of txs fees. It's around 4m sats, so we would need bitcoin at 10.000.000 usd to have it around the mining fee reward of this time, next halving 5.000.000, then 2.500.000, 1.250.000, 625.000, 312.000...so in 20 years very likely bitcoin will be worth much more than 312.000usd and mining fee of transations will exceed or be equal of today's the block reward in terms of dollars. Add to that all those folks running miners at home with photovoltaic and whatever energy we will have in the next years.