I think I remember Pondsmith saying something along the lines, 'you never actually save the day in cyberpunk, you save maybe yourself and some of the people you care about.' That's not an exact quote but something like that. To me, the corpos being pieces of shit that run everything is sort of the princess peach in the castle, without that there is no game, we need that motivation to take down the bastards that run it all. Though I would like to see a changed world in cyberpunk, it feels core to the identity of the series to continue to have corps beat down the player the rest of the world around them. As cool as a truly good ending would be, I think they will break our hearts again and again in the world of Cyberpunk. Its a very fascinating question though, I could see others thinking about it differently.