Ah yes, but this way you get to write compression algorithms and do performance optimization. The journey is more important than the destination. Edit: Also (i

Ah yes, but this way you get to write compression algorithms and do performance optimization. The journey is more important than the destination. Edit: Also (in Lichess' case) you're not trading CPU usage for disk space, you're trading CPU usage for disk space and network traffic, which you're probably paying much more for.