each block gives mining pools a reward in the form of new coins + transaction fee's

however right now, pools dont care much about the tx fee's as its only about 10-15% extra of the new coin production. thus they treat the new coin as income and the tx fee as a bonus

income:bonus

at the moment the reward is 12.5btc new coins(income) and ~1.5btc(bonus) in transaction fee's (12.5:1.5 (new coin:tx fee))

and so (rounded to this years average $8k), this means each block gives roughly ($100k:$12k) $112k

every ~4 years the new coin amount halves. so in

~2020 it will be 6.25btc new coins

~2024 it will be 3.125btc new coins

~2028 it will be 1.5625 nw coins..

now based on a sensible price continuing and not much changing about the number of transactions per block. if we imagine that the transaction fee's remained at 1.5btc per block..

then in ~2028 the newcoin:tx fee ratio will be like for like 1:1 (1.5btc:1.5btc to be more exact)

after 2032 mining pools will care less about the new coin production and care more about the transaction fee.

this will be the time where the tx fee becomes the income and the new coin becomes the bonus (psychologically)

so if we imagine the price of bitcoin was 10x more then it is now in a decade

(1.5btc:1.5btc) $120k:$120k

but with that said in ~2028 if the price of bitcoin was $80k($120k for 1.5btc) . and the blocks were still only performing 2000-4000 tx a block (2000 legacy or 4000 full utility segwit with the blocksize/weight remaining as it is today)

each tx would cost $60 legacy or $30 segwit

(yea ignore the 'discount' the devs say segwit will give. based on tx count the segwit will actually produce if fully utilited. and divide the $120k(1.5btc) by the 2000 to 4000tx)

with all that said.....

so the problem is not that pools will not get any funds in2028->2140->2140+.. they will. so relax..

the problem is how much it would cost each tx, to make the funds the pools would receive/need.

which is where the debate of 5 years+ ago began about scaling onchain to allow more transactions so that instead of 2000-4000tx a block. it becomes in a decade(not over night) slowly growing to be 20,000-40,000tx a block so that fee's are only $6Legacy $3Segwit

after all who would want to use bitcoins blockchain if it cost $30-$60 a tx in a decade. when other currencies would offer cheaper tx fee's.

and please dont rebuttle about LN. because LN will not be a feature exclusive to bitcoin. the LN devs have already publicly admitted that LN will be used by other coins. thus onchain scaling has to happen in less than a decade to keep the fee per tx down to keep the ntworks utility attractive and useful.

and please dont rbuttle about 'gigabyte blocks by midnight' no one is suggesting gigabyte blocks tomorrow or this year. so it can be slow stead increases over time to nsure that the btc network stays cost effective, useful and without barriers