> There aren't any big long base blocks at all.
Linux Kernel. libc. Compilers. Programming Languages. Big libraries like filesystems, while generally not open source, system ROMs. Tons of network and system RFCs, standards like POSIX.
These are these long, wide, thin slabs you don't see. Others are too high level. These slabs are very close to metal. You're not kneeling enough. :)