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By just looking at prices, you'd think that tech also won't survive much longer.

So Bitcoin stops processing blocks at 5k USD. I had no idea this could happen.

It doesn’t stop processing blocks, miners just make less money for each one. Some miners will pull out of the market, making it easier for the rest to mine, until the market finds an equilibrium. The cost of attacking the system will go down, but it won’t stop entirely.

Some miners are already spending more on energy & operations cost per coin than the market value, so even if the price holds I expect to see some miners drop out of the market.

-75% in 1 year is a more impressive number.

-0% in 2 years is a less impressive number.