If you applied that same logic to say, musical instruments or painting, where would you be? Haven't you seen the wise quotes by the sages here? "The best camera is the one in your hands" is one that comes to mind.
Tools for photography are great but I see them as secondary to the artistic eye. You may want both but akin to we say in the cycling world, "Light, strong, cheap....pick two"
Applying updating computer tech logic to camera gear is flawed in my mind. Maybe it's an age thing, maybe it's the respect for masters who did such amazing work with what most forumites would scoff at...dunno, all I know is there is LOT of harping on the industry, especially Canon for not churning out new devices fast enough for you.
So, it all boils down to this.. It must be awful to live with the notion that you blame your poor images on the gear.Because that's the message I'm getting. "If I only had ____"