>it never ceases to amaze me how the software engineering provision has very smart folks reimplement the same conceptual primitives over and over again.

Well, no one cares, but I'm not saying that to be mean to dismissive, it's just that software production as an industry (esp. at a company like Bloomberg) can basically do whatever it wants because of low capital costs to produce something. Things like writing another queue system will have zero impact on the industry unless it's adopted widely (and cargo culted) and later made worse.

Maybe I'm about to eat my shoe, but if a capable of team at Bloomberg wanted to reinvent something considered unnecessary in terms of industry need, they probably could if for no other reason that management allowing some indulgence in exchange for keeping talented people around is Worth It™.