> To answer that question you gave to make assumptions about the cost if mining, the cost if attacks and the cost of hash power at a point 117 years from now.
I'm not convinced that you actually do have to make too many assumptions. The claim I'm making here is that bitcoin has had a steady and predictable increase in mining demand as the currency has grown, but that iff bitcoin becomes solely a low-volume high-value settlement platform (instead of a buy-coffee high-volume low-value blockchain), there will be a demand shock once the block rewards go to zero. You can reason about this while keeping the hashrates and cost of achieving that hashrate abstract.
If volume grows, this argument is moot because there will be plenty of transaction fees to gobble.
Not sure how you measure an increase in mining demand, but given that we have had three halvenings now, doesn't that imply mining isn’t going away? They are getting less bitcoin, yet still mining. I don't think it will be a shock by then. Put another way, the shock in 2012, 2016 and 2020 have all made mining very profitable in the following years resulting in mining booms in 2013, 2017 & 2021 (so far.)
Transaction volumes over time have risen as well. If bitcoin has amy value to society in 113 years, people will pay to transact it. Whether that is one expensive transaction a month or a million every block I don’t know— but I think the latter is more likely.
I'm not convinced that you actually do have to make too many assumptions. The claim I'm making here is that bitcoin has had a steady and predictable increase in mining demand as the currency has grown, but that iff bitcoin becomes solely a low-volume high-value settlement platform (instead of a buy-coffee high-volume low-value blockchain), there will be a demand shock once the block rewards go to zero. You can reason about this while keeping the hashrates and cost of achieving that hashrate abstract.
If volume grows, this argument is moot because there will be plenty of transaction fees to gobble.