A mathematical certainty that Bitcoin will fail

Right now there is about $4,000 worth of fees in each block. This number is dwarfed by the block subsidy which is about $300,000 at current exchange rates. The block subsidy halves every 4 years which is an event called a halving and its celebrated because it creates a supply shock and historically sent exchange rate higher. The next halving is estimated to be Feb 10th 2024. The exact date isn't known yet since its based on block height, and sometimes blocks come in faster and sometimes slower which makes the exact date shift until we get closer and the block time variance matters less.

So in about 11 years, after 3 more halving's, miners will mostly be paid by fees. At current blocksize there is room for about 7,000 transactions in a block. Sometimes more, sometimes less depending on the number of inputs and outputs etc, but roughly speaking there is room for 7,000 transactions. So if everyone paid $10! to get included, which seems high, then the miners would still only get $70,000 which is MUCH less than today. Due to this uncertainty the market will cease to invest in and hold BTC and look for sounder alternatives instead. This gives coins like ETH who don't have this problem time to gain credibility and grow its market cap and eventually there will just be no need for BTC which means there will never be any fees for miners.

Last but not least BTC blockchain will also grow larger every year and at some point, if people keep using it, the blockchain will be so large that it will be impossible to sync it. So this means that one way or the other it is mathematially certain that Bitcoin will fail.