D&D Frustration

To tell the truth I'm more than a little frustrated with the whole D&D scene. I can't blame D&D really. I mean the game itself is blameless. Even 4e and 3 and 3.5 and we'll throw in Pathfinder. I won;t even blame 5e. But I just don't get the, "we've got to change it" mentality. I am more than a little disgusted with gaming companies. They think that they've got to make things better, when they already have a pretty darn good game. It's not necessary to redesign your whole freaking game when an errata will do--even a reprint of your previous rules with errata included. Maybe a reorganization of material if it could use improvement.