RendCycle :
AMD's GPU is going to die if they don't release something better and affordable soon. Nvidia just made their Adaptive Sync technology compatible with selected Freesync Monitors. With this, I can see will result to further decrease of AMD's GPU market share. I myself have actually just recently switched to an Nvidia card to see how it is with the green team after being a loyal AMD customer for the past years.
Why would the Radeon Technologies Group die? The most popular GPU segment isn't the ultra high end. The most popular aka best selling segment is the one the GTX 1060 is in... and AMD has 3 good cards in that range, the RX 570, 580, and 590. AMD is about to release a card that competes with the RTX 2080, that isn't a small feat, but it is pretty much unimportant compared to the money that AMD makes on their Polaris cards. With Navi around the corner AMD is going to allegedly have cards with GTX 1080 performance at RX 580 (GTX 1060) prices. Do you know how huge that will be? NVidia just unveiled the RTX 2060, a card that performs like a GTX 1070 or Vega 56, for $350. AMD says they will have a card that performs like a GTX 1080 for $250 (maybe less?). If that is even close to true then AMD will eviscerate NVidia's mid range market.
The VII is probably going to be AMD's top card for a little while, and that isn't a bad thing. RTX 2080 performance is pretty darn good. Perhaps a 64 CU unit would get AMD into striking distance of the 2080Ti, maybe that is the next step. Who really knows? Perhaps this 60 CU chip is a 60 CU chip because the yields aren't quite good enough yet on 7nm for a 64 CU chip. Time will have to tell.
You can't judge a brand by its halo product. The real bread and butter is in the GPUs that the majority of people can afford. Right now AMD is doing just fine in that arena. They only have to hold out for Navi and the game will be back on. AMD certainly won't be dying any time soon with the success they have had in the CPU arena as of late, and RTG still seems healthy enough to launch cutting edge hardware. They are catching up, slowly but surely. Maybe Navi will do it for them on the high end, and maybe it won't, but if rumors are right AMD will be just fine, and very competitive in the upper-mid to low range... certainly not dying.