[Gigachad]

Mining hardware becomes obsolete after 6 months because more efficient chips come in which every other miner has. So they all get e wasted constantly.

It’s a negative roi to mine on old hardware.

[scotty79]

At some point this has to stop as bitcoin ASIC manufacturing reaches top tier of available technology. Not sure if this moment already came so it's risky, but at some point energy and energy generation hardware will dominate the cost of mining bitcoin.

[wmf]

This is less true now due to maturing of ASIC designs and the slowing of Moore's Law. N5-based miners could last for years.