Transistor Radio Brand Names - What's Up?

[compucat]

I am turning my attention to the transistor side of my radio collection and rediscovering the joys of late night listening with my 10 transistor pocket set. I have often wondered why transistor radios had such obscure brand names, even between examples of the same radio. I'm talking about brands such as Star-Lite, Valiant, Merc Radio, Starfire, Luxtone, etc. Who actually made these sets? Were the brand names just faceless corporations that bought radios from a handfull of "real" radio manufacturer's? I know rebadging has always gone on and does so today but with 1960s transistors, it seems absurd.