You have perfectly highlighted one of the major reasons why AMD's GPU division has struggled for the last 5 years. If they go with HBM2 this year for gaming-facing cards, put another nail in the coffin.
I agree. I just don't understand why AMD is aiming Polaris at lower to mid range users. It peeves me off that AMD won't have higher end cards. I predict that Nvidia will win over AMD. Depending if Nvidia got A Sync right. I guess it won't matter much if the GTX1080/1070 will be power houses in the market.