You can still do this today, on linux, where it isn't the default for some reason. Though downloading anything isn't necessary. Run the following as root.
modprobe zram
echo lz4 >> /sys/block/zram0/comp_algorithm
echo 128G >> /sys/block/zram0/disksize
mkswap --label zram0 /dev/zram0
swapon --priority 100 /dev/zram0
I suppose "download more crypto" could be a real thing too, it's just called "mining" for some reason.
I suppose it's similar to "download more crypto" mining in the sense that there is a CPU tradeoff.
I haven't noticed any noticeable CPU overhead when not running out of ram - nor should there be any.
It is the default on windows and mac for good reason. I'm a pretty strong believer that nearly all desktop linux users, and most server users, would benefit from it as well.
There used to be a bunch of different RAM compressors. They were very popular. I think one was called "Stacker."
That's the thing about the matrix, it's a womb. Like the thing is the idea humans can be used as batteries is backwards, totally energy inefficient. Forget about the batteries. Think of the robot war, very overlooked. Get them not to fight, and then? Your services are no longer necessary.