Betas are more for the developers than players, so they can test how their servers/network handle traffic. I can see that it would take some manpower to setup a beta, but I would imagine the rewards outweigh the cost.
Platinums: Red Dead Redemption, Killzone 2, LittleBigPlanet, Terminator Salvation, Uncharted 1, inFamous Second Son, Rocket League







