Power creep punishes classic control decks more and more every expansion. The possibility to create endless resources, means that your deck cannot be grinded down card for card. So passive decks are punished. If you want to play control, make sure you have big payoff cards or combos ready to pop.
Not really, no. Devs shifted gameplay heavily over past few years to midrange and control style of the play. Many of you "control" players are actually people who play home-brew-beyond-greed decks and then complain when you can't consistently highroll and topdeck.
On top of that, duels weren't meant to be control oriented game mode in the first place.
I've been enjoying a rather slow climb this month and last with a control priest deck. A slow climb because even though my win rate is good, a single game takes 15+ minutes on average. Which is good! I like long games. Playing against a blood DK reminds me of the good feels from the days of Galakrond Priest vs Control Warrior. I especially like winning with my opponent's game plan and Identity Theft might be my new favorite card in standard.
That's not to say it's unbeatable by any means. A bad mulligan can cost me a game here or there to pure Pally or undead priest, and I have a terrible time against Rez DH and deck buff Warrior, which I would classify akin to combo decks. The rock, paper, scissors seems to be working.