Techen, this is an old thread. The recent updates fixed this issue, there's no need for necromancy here.
This is NOT a fixed issue, if the minor races are not intended to obtain gross technological superiority. I just finished a game as the humans-- was going along fine, slowly winning the diplo-game. The best guns any major race had were gravity drivers. A minor race stole the Korath tech, I went to trade. It was like Christmas.
I bought Hyperwarp 3, Xeno-Farms 3, Black Hole Erupters, and a passel of other endgame techs in turn for comically low prices-- mostly the midgame techs I already had, far inferior to the stuff they were running around with.
A game or two ago, something similar happened in early-game when a Jagged Knife event hit-- and the JKs were catapulted to endgame. That game ended less favorably, as I sold them my homeworld to buy the stuff, and lacked the econ to exploit it. But, still...
Heck, I've had minor races achieve immortality with great regularity lately-- doesn't remove them from the game or anything, so I don't know what the deal is.
I'd initially assumed this was intentional-- some kind of compensation to keep the Minor Races more competitive-- but they're still getting their clocks cleaned, so if that's the goal, it's not achieving it.