Yeah, the Vega 2 card is a pure compute card, it was made purely for compute, it's also a pipecleaner 7nm product and a shrink. It has very expensive memory doubled and a 1TB/s bandwidth which increases the cost again. It's designed for the professional market full stop. It happens to be faster for gaming so AMD said why not make it available. It's not optimised or efficient for gaming.
It's also retaining full FP64 performance like previous Pro cards except at a cheaper price. It offers I think 6.4TF of FP64 performance, Titan V is 7TF in the pci-e version, similar 'home' compute cards cost 3-4 times as much with about the same performance. This card was never meant to be an optimised or cheap gaming card. It's a straight compute card designed for that market and having more expensive memory for that reason. Because of the shrink it happens to be a bit faster for gaming and frankly they've made it available pretty damn cheap considering thy can sell pretty much every one as a expensive Professional card at a far higher price. They are basically giving people an option to get a higher performance card maybe not far off cost because hell, they are making it and why not.
If you think all that means AMD is price fixing with nvidia, because a product that has reasons to be expensive and is being sold with likely very low margins to give AMD users another option then frankly you're crazy.
If this was like previous home compute cards it would cost $1000, at $700 the difference is it probably (yet to be seen) won't have pro driver support but maybe it will, which actually makes this one of the cheapest ever cheap compute cards. IF it doesn't have pro driver compatibility then it's just a cheaper option for those doing compute that write their own software and don't need pro support for specific packages and there are a lot of people who fill that area. For those again who happen to want a faster card and it works for them, great. But this isn't years of optimisation to bring the cheapest gaming card, this is a product aimed and having an increased cost to produce for a different market that happened to end up faster for gaming. It's not amazing price performance, but it was never aiming or put a single second into trying to be that during development.
It's hilarious because 5-6 months ago when AMD were talking about Vega 7nm as a pro only card all about compute people were saying along the lines of "but it will be faster due to faster clocks, why not release a gaming version".... so AMD did, released a gaming version of a card potentially close to cost and people still go nuts over it.
I'm not buying one, Navi will offer far higher price/performance. I'm expecting similar performance at almost half the price from the first Navi and maybe 70-80% higher performance from a big Navi later on when a bigger die becomes viable. Those will offer huge price/performance gains that we want from new generations.
If someone wants 25-35% higher performance and doesn't want Nvidia then they have an option, better than not having the option.