I hear you.
The way I look at it is IMO, it's not a good idea to get first gen kit as there will always be kinks that will need ironing out. Also the industry seems to release these things before the other part of the industry that makes the content we listen to and view has even come up with the full specifications. Which also means that new things need to be implamented down the line and most of the time it is a hardware change meaning yet another purchase to get the full spec.
Look at HD Ready TVs when they first came out. They were only 720p and not even 1080i though they would take a 1080i signal and down scale it.
Now you go 4K TVs that have been out a while and the Full spec for 4K has not even been fully agreed upon. (it may have now but only just)
So I tend to wait a few years and gain 3 or 4 new cool things instead of constantly upgrading my AV and Hi-Fi kit like I know some people do.
Of course the indusrty need to keep making money but what they should be doing IMO is waiting till a new aspetc has been perfected and all parties are on the same page before releasing it to the public to purchase. That way tones of material wouldn't get wasted and lets say a new TV wouldn't be out of date a week after it is released.
Of course it's different for computers but most of the time you can just change 1 hardware componant or download the lates software. I bet you would never see the AV and Hi-Fi indusrties making products that will take a simple hardware upgrade for say £20 and save us having to buy a whole new set.
The PS3 was quite future proof in that it was ony 2D capable on release but later down the line an firmware upgrade allowed it to become a 3D player, for games and movies. Also it now allows HD audio to be sent via Bitstream to and AVR where as on release it would have to do it internally. Of course the DTS HD-MA and Dolby TrueHD audio codecs and not been created at the time the PS3 came out so Only PCM was available. The fact it was future proofed to such an extent to me shows up the rest of the industry IMO.