EOS code was originally being developed as an upgrade to Steem. How is it that people haven't figured this out by now?

It never occurred to him to migrate an established userbase/platform over to it? Would they not be compatible and migration be a matter of reserving resources on EOS for STEEM to operate? A bit more of a nuanced thing to 'figure out', wouldn't you say? But hell, I guess he didn't think it was worth it, and as time passes, it's becoming more and more clear as to why he cut bait.