I want to reply to another odd piece of your claim. Why are you comparing recumbents to safety bicycles? We're talking about uprights. And so far as I know, recumbent velocipedes are later than upright velocipedes, recumbent pedaled bikes are later than upright pedaled bikes (notably the boneshaker); and recumbent chained bikes are later than upright chained bikes.

And surely you realize that all of your claims (cost, weight, breaking, agility) can be more easily ascribed to the fact that uprights are a huge mass market with enormous R&D funding, and recumbents are a tiny little hobbyist thing. Okay, maybe not agility, that's probably inherent.