Comment by InfamousRece

To be fair it was not that difficult to set create a pure 64 bit binary distro and there were a few of them. The real issue was to figure out how to do mixed 32/64 bit and this is where the fight about /lib directories originated. In a pure 64 bit distro the only way to run 32 bit binaries was to create a chroot with a full 32 bit installation. It took a while before better solutions were agreed to. This was an era of Flash and Acrobat Reader - all proprietary and all 32 bit only so people really cared about 32 bit.